diff --git a/src/managers/tasks.spec.ts b/src/managers/tasks.spec.ts
index aa3a1d59..ee3d285b 100644
--- a/src/managers/tasks.spec.ts
+++ b/src/managers/tasks.spec.ts
@@ -25,6 +25,7 @@ describe('Managers → Task', () => {
 			const expected: TaskGroup = {
 				a: {
 					base: 'a',
+					globstar: false,
 					patterns: ['a/*.txt', 'a/*.md'],
 					positive: ['a/*.txt', 'a/*.md'],
 					negative: []
@@ -42,6 +43,7 @@ describe('Managers → Task', () => {
 			const expected: TaskGroup = {
 				a: {
 					base: 'a',
+					globstar: false,
 					patterns: ['!a/*.txt', '!a/*.md'],
 					positive: [],
 					negative: ['a/*.txt', 'a/*.md']
@@ -59,6 +61,7 @@ describe('Managers → Task', () => {
 			const positive: TaskGroup = {
 				a: {
 					base: 'a',
+					globstar: true,
 					patterns: ['a/**/*'],
 					positive: ['a/**/*'],
 					negative: []
@@ -68,6 +71,7 @@ describe('Managers → Task', () => {
 			const negative: TaskGroup = {
 				a: {
 					base: 'a',
+					globstar: false,
 					patterns: ['!a/**/*.txt'],
 					positive: [],
 					negative: ['a/**/*.txt']
@@ -77,6 +81,7 @@ describe('Managers → Task', () => {
 			const expected: TaskGroup = {
 				a: {
 					base: 'a',
+					globstar: true,
 					patterns: ['a/**/*', '!a/**/*.txt'],
 					positive: ['a/**/*'],
 					negative: ['a/**/*.txt']
@@ -93,6 +98,7 @@ describe('Managers → Task', () => {
 		it('should returns tasks', () => {
 			const expected: ITask[] = [{
 				base: 'a',
+				globstar: true,
 				patterns: ['a/**/*', '!a/**/*.txt'],
 				positive: ['a/**/*'],
 				negative: ['a/**/*.txt']
@@ -118,6 +124,7 @@ describe('Managers → Task', () => {
 			it('should returns one global task', () => {
 				const expected: manager.ITask[] = [{
 					base: '.',
+					globstar: true,
 					patterns: ['**/*'],
 					positive: ['**/*'],
 					negative: []
@@ -132,6 +139,7 @@ describe('Managers → Task', () => {
 			it('should returns one global task with negative patterns', () => {
 				const expected: manager.ITask[] = [{
 					base: '.',
+					globstar: true,
 					patterns: ['**/*', '!**/*.md'],
 					positive: ['**/*'],
 					negative: ['**/*.md']
@@ -146,6 +154,7 @@ describe('Managers → Task', () => {
 			it('should returns one global task with negative patterns from options', () => {
 				const expected: manager.ITask[] = [{
 					base: '.',
+					globstar: true,
 					patterns: ['**/*', '!**/*.md'],
 					positive: ['**/*'],
 					negative: ['**/*.md']
@@ -162,6 +171,7 @@ describe('Managers → Task', () => {
 			it('should returns one task', () => {
 				const expected: manager.ITask[] = [{
 					base: 'a',
+					globstar: true,
 					patterns: ['a/**/*'],
 					positive: ['a/**/*'],
 					negative: []
@@ -176,6 +186,7 @@ describe('Managers → Task', () => {
 			it('should returns one task with negative patterns', () => {
 				const expected: manager.ITask[] = [{
 					base: 'a',
+					globstar: true,
 					patterns: ['a/**/*', '!a/*.md'],
 					positive: ['a/**/*'],
 					negative: ['a/*.md']
@@ -190,6 +201,7 @@ describe('Managers → Task', () => {
 			it('should returns one task without unused negative patterns', () => {
 				const expected: manager.ITask[] = [{
 					base: 'a',
+					globstar: true,
 					patterns: ['a/**/*'],
 					positive: ['a/**/*'],
 					negative: []
@@ -204,6 +216,7 @@ describe('Managers → Task', () => {
 			it('should returns one task with negative patterns from options', () => {
 				const expected: manager.ITask[] = [{
 					base: 'a',
+					globstar: true,
 					patterns: ['a/**/*', '!a/*.md'],
 					positive: ['a/**/*'],
 					negative: ['a/*.md']
@@ -221,12 +234,14 @@ describe('Managers → Task', () => {
 				const expected: manager.ITask[] = [
 					{
 						base: 'a',
+						globstar: false,
 						patterns: ['a/*', '!a/*.md'],
 						positive: ['a/*'],
 						negative: ['a/*.md']
 					},
 					{
 						base: 'b',
+						globstar: false,
 						patterns: ['b/*'],
 						positive: ['b/*'],
 						negative: []
@@ -243,12 +258,14 @@ describe('Managers → Task', () => {
 				const expected: manager.ITask[] = [
 					{
 						base: 'a',
+						globstar: false,
 						patterns: ['a/*', '!a/*.md', '!**/*.txt'],
 						positive: ['a/*'],
 						negative: ['a/*.md', '**/*.txt']
 					},
 					{
 						base: 'b',
+						globstar: false,
 						patterns: ['b/*', '!**/*.txt'],
 						positive: ['b/*'],
 						negative: ['**/*.txt']
@@ -265,12 +282,14 @@ describe('Managers → Task', () => {
 				const expected: manager.ITask[] = [
 					{
 						base: 'a',
+						globstar: false,
 						patterns: ['a/*', '!a/*.md', '!**/*.txt'],
 						positive: ['a/*'],
 						negative: ['a/*.md', '**/*.txt']
 					},
 					{
 						base: 'b',
+						globstar: false,
 						patterns: ['b/*', '!**/*.txt'],
 						positive: ['b/*'],
 						negative: ['**/*.txt']
diff --git a/src/managers/tasks.ts b/src/managers/tasks.ts
index 67c3cc2b..4d037288 100644
--- a/src/managers/tasks.ts
+++ b/src/managers/tasks.ts
@@ -6,6 +6,7 @@ import { IOptions } from './options';
 
 export interface ITask {
 	base: string;
+	globstar: boolean;
 	patterns: Pattern[];
 	positive: Pattern[];
 	negative: Pattern[];
@@ -39,6 +40,7 @@ export function makePositiveTaskGroup(positive: PatternsGroup): TaskGroup {
 
 		collection[base] = {
 			base,
+			globstar: positivePatterns.some(patternUtils.hasGlobStar),
 			patterns: positivePatterns,
 			positive: positivePatterns,
 			negative: []
@@ -57,6 +59,7 @@ export function makeNegativeTaskGroup(negative: PatternsGroup): TaskGroup {
 
 		collection[base] = {
 			base,
+			globstar: false,
 			patterns: negativePatterns.map(patternUtils.convertToNegativePattern),
 			positive: [],
 			negative: negativePatterns
@@ -124,6 +127,7 @@ export function generate(patterns: Pattern[], options: IOptions): ITask[] {
 	if ('.' in positiveGroup) {
 		const task: ITask = {
 			base: '.',
+			globstar: positive.some(patternUtils.hasGlobStar),
 			patterns: ([] as Pattern[]).concat(positive, negative.map(patternUtils.convertToNegativePattern)),
 			positive,
 			negative
diff --git a/src/providers/reader-async.spec.ts b/src/providers/reader-async.spec.ts
index d0f435ae..938de443 100644
--- a/src/providers/reader-async.spec.ts
+++ b/src/providers/reader-async.spec.ts
@@ -46,6 +46,7 @@ describe('Providers → ReaderAsync', () => {
 	describe('.read', () => {
 		const task: ITask = {
 			base: 'fixtures',
+			globstar: true,
 			patterns: ['**/*'],
 			positive: ['**/*'],
 			negative: []
diff --git a/src/providers/reader-stream.spec.ts b/src/providers/reader-stream.spec.ts
index 22d3122d..a1ebd26d 100644
--- a/src/providers/reader-stream.spec.ts
+++ b/src/providers/reader-stream.spec.ts
@@ -64,6 +64,7 @@ describe('Providers → ReaderStream', () => {
 	describe('.read', () => {
 		const task: ITask = {
 			base: 'fixtures',
+			globstar: true,
 			patterns: ['**/*'],
 			positive: ['**/*'],
 			negative: []
diff --git a/src/providers/reader-sync.spec.ts b/src/providers/reader-sync.spec.ts
index d126f9ba..e646ab91 100644
--- a/src/providers/reader-sync.spec.ts
+++ b/src/providers/reader-sync.spec.ts
@@ -41,6 +41,7 @@ describe('Providers → ReaderSync', () => {
 	describe('.read', () => {
 		const task: ITask = {
 			base: 'fixtures',
+			globstar: true,
 			patterns: ['**/*'],
 			positive: ['**/*'],
 			negative: []
diff --git a/src/providers/reader.spec.ts b/src/providers/reader.spec.ts
index b69f4e43..c0765c61 100644
--- a/src/providers/reader.spec.ts
+++ b/src/providers/reader.spec.ts
@@ -86,6 +86,7 @@ describe('Providers → Reader', () => {
 
 			const actual = reader.getReaderOptions({
 				base: '.',
+				globstar: true,
 				patterns: ['**/*'],
 				positive: ['**/*'],
 				negative: []
@@ -102,6 +103,7 @@ describe('Providers → Reader', () => {
 
 			const actual = reader.getReaderOptions({
 				base: 'fixtures',
+				globstar: true,
 				patterns: ['**/*'],
 				positive: ['**/*'],
 				negative: []
@@ -392,7 +394,7 @@ describe('Providers → Reader', () => {
 
 				const entry = getDirectoryEntry(false /** dot */, false /** isSymbolicLink */);
 
-				const actual = reader.deep(entry, []);
+				const actual = reader.deep(entry, [], true /** globstar */);
 
 				assert.ok(!actual);
 			});
@@ -406,7 +408,7 @@ describe('Providers → Reader', () => {
 					isDirectory: () => true
 				});
 
-				const actual = reader.deep(entry, []);
+				const actual = reader.deep(entry, [], true /** globstar */);
 
 				assert.ok(!actual);
 			});
@@ -418,7 +420,7 @@ describe('Providers → Reader', () => {
 
 				const entry = getDirectoryEntry(false /** dot */, true /** isSymbolicLink */);
 
-				const actual = reader.deep(entry, []);
+				const actual = reader.deep(entry, [], true /** globstar */);
 
 				assert.ok(actual);
 			});
@@ -428,7 +430,7 @@ describe('Providers → Reader', () => {
 
 				const entry = getDirectoryEntry(false /** dot */, true /** isSymbolicLink */);
 
-				const actual = reader.deep(entry, []);
+				const actual = reader.deep(entry, [], true /** globstar */);
 
 				assert.ok(!actual);
 			});
@@ -440,7 +442,7 @@ describe('Providers → Reader', () => {
 
 				const entry = getDirectoryEntry(true /** dot */, false /** isSymbolicLink */);
 
-				const actual = reader.deep(entry, []);
+				const actual = reader.deep(entry, [], true /** globstar */);
 
 				assert.ok(actual);
 			});
@@ -450,7 +452,7 @@ describe('Providers → Reader', () => {
 
 				const entry = getDirectoryEntry(true /** dot */, false /** isSymbolicLink */);
 
-				const actual = reader.deep(entry, []);
+				const actual = reader.deep(entry, [], true /** globstar */);
 
 				assert.ok(!actual);
 			});
@@ -462,7 +464,7 @@ describe('Providers → Reader', () => {
 
 				const entry = getDirectoryEntry(false /** dot */, false /** isSymbolicLink */);
 
-				const actual = reader.deep(entry, []);
+				const actual = reader.deep(entry, [], true /** globstar */);
 
 				assert.ok(actual);
 			});
@@ -472,7 +474,7 @@ describe('Providers → Reader', () => {
 
 				const entry = getDirectoryEntry(false /** dot */, false /** isSymbolicLink */);
 
-				const actual = reader.deep(entry, ['**/pony/**']);
+				const actual = reader.deep(entry, ['**/pony/**'], true /** globstar */);
 
 				assert.ok(actual);
 			});
@@ -482,7 +484,7 @@ describe('Providers → Reader', () => {
 
 				const entry = getDirectoryEntry(false /** dot */, false /** isSymbolicLink */);
 
-				const actual = reader.deep(entry, ['**/directory/**']);
+				const actual = reader.deep(entry, ['**/directory/**'], true /** globstar */);
 
 				assert.ok(actual);
 			});
@@ -492,7 +494,29 @@ describe('Providers → Reader', () => {
 
 				const entry = getDirectoryEntry(false /** dot */, false /** isSymbolicLink */);
 
-				const actual = reader.deep(entry, ['**/directory']);
+				const actual = reader.deep(entry, ['**/directory'], true /** globstar */);
+
+				assert.ok(!actual);
+			});
+		});
+
+		describe('Filter by «globstar» parameter', () => {
+			it('should return true by globstar parameter', () => {
+				const reader = getReader();
+
+				const entry = getDirectoryEntry(false /** dot */, false /** isSymbolicLink */);
+
+				const actual = reader.deep(entry, [], true /** globstar */);
+
+				assert.ok(actual);
+			});
+
+			it('should return false by globstar parameter', () => {
+				const reader = getReader();
+
+				const entry = getDirectoryEntry(false /** dot */, false /** isSymbolicLink */);
+
+				const actual = reader.deep(entry, [], false /** globstar */);
 
 				assert.ok(!actual);
 			});
diff --git a/src/providers/reader.ts b/src/providers/reader.ts
index b5fdded9..fc5e1ad4 100644
--- a/src/providers/reader.ts
+++ b/src/providers/reader.ts
@@ -37,7 +37,7 @@ export default abstract class Reader {
 		return {
 			basePath: task.base === '.' ? '' : task.base,
 			filter: (entry) => this.filter(entry, task.patterns, task.negative),
-			deep: (entry) => this.deep(entry, task.negative),
+			deep: (entry) => this.deep(entry, task.negative, task.globstar),
 			sep: '/'
 		};
 	}
@@ -93,7 +93,7 @@ export default abstract class Reader {
 	/**
 	 * Returns true if directory must be read.
 	 */
-	public deep(entry: IEntry, negative: Pattern[]): boolean {
+	public deep(entry: IEntry, negative: Pattern[], globstar: boolean): boolean {
 		if (!this.options.deep) {
 			return false;
 		}
@@ -115,7 +115,11 @@ export default abstract class Reader {
 			return false;
 		}
 
-		return !micromatch.any(entry.path, negative, this.micromatchOptions);
+		if (micromatch.any(entry.path, negative, this.micromatchOptions)) {
+			return false;
+		}
+
+		return globstar;
 	}
 
 	/**
diff --git a/src/utils/pattern.spec.ts b/src/utils/pattern.spec.ts
index eadc1a84..198d3dc0 100644
--- a/src/utils/pattern.spec.ts
+++ b/src/utils/pattern.spec.ts
@@ -98,4 +98,18 @@ describe('Utils → Pattern', () => {
 			assert.equal(actual, expected);
 		});
 	});
+
+	describe('.hasGlobStar', () => {
+		it('should returns true', () => {
+			const actual = util.hasGlobStar('**/*.js');
+
+			assert.ok(actual);
+		});
+
+		it('should returns false', () => {
+			const actual = util.hasGlobStar('*.js');
+
+			assert.ok(!actual);
+		});
+	});
 });
diff --git a/src/utils/pattern.ts b/src/utils/pattern.ts
index e7b69875..5292e011 100644
--- a/src/utils/pattern.ts
+++ b/src/utils/pattern.ts
@@ -50,3 +50,10 @@ export function getPositivePatterns(patterns: Pattern[]): Pattern[] {
 export function getBaseDirectory(pattern: Pattern): string {
 	return globParent(pattern);
 }
+
+/**
+ * Return true if provided pattern has globstar.
+ */
+export function hasGlobStar(pattern: Pattern): boolean {
+	return pattern.indexOf('**') !== -1;
+}