diff --git a/index.js b/index.js
index b9bdfc4..d342209 100755
--- a/index.js
+++ b/index.js
@@ -32,6 +32,7 @@ var doc = [
 ].join('\n');
 
 var fs = require('fs'),
+    glob = require('glob'),
     path = require('path'),
     sourcemap = require('source-map'),
     convert = require('convert-source-map'),
@@ -81,9 +82,9 @@ function loadSourceMap(jsFile, mapFile) {
   var jsData;
   try {
     jsData = fs.readFileSync(jsFile).toString();
-  } catch(e) {
-    if( err.code === "ENOENT" ) {
-      console.error( "File not found! -- "+err.message );
+  } catch(err) {
+    if (err.code === "ENOENT" ) {
+      console.error("File not found! -- ", err.message);
       return null;
     } else {
       throw err;
@@ -161,10 +162,35 @@ function validateArgs(args) {
   }
 }
 
+// On Windows, it's helpful if source-map-explorer can expand globs itself.
+// See https://github.com/danvk/source-map-explorer/issues/52
+function expandGlob(args) {
+  var arg1 = args['<script.js>'];
+  var arg2 = args['<script.js.map>'];
+  if (arg1 && !arg2) {
+    var files = glob.sync(arg1);
+    if (files.length > 2) {
+      throw new Error(
+          'Glob should match exactly 2 files but matched ' + files.length + ' ' + arg1);
+    } else if (files.length === 2) {
+      // allow the JS and source map file to match in either order.
+      if (files[0].indexOf('.map') >= 0) {
+        var tmp = files[0];
+        files[0] = files[1];
+        files[1] = tmp;
+      }
+      args['<script.js>'] = files[0];
+      args['<script.js.map>'] = files[1];
+    }
+  }
+  return args;
+}
+
 
 if (require.main === module) {
 
 var args = docopt(doc, {version: '1.3.3'});
+expandGlob(args);
 validateArgs(args);
 var data = loadSourceMap(args['<script.js>'], args['<script.js.map>']);
 if (!data) {
@@ -235,5 +261,6 @@ module.exports = {
   computeGeneratedFileSizes: computeGeneratedFileSizes,
   adjustSourcePaths: adjustSourcePaths,
   mapKeys: mapKeys,
-  commonPathPrefix: commonPathPrefix
+  commonPathPrefix: commonPathPrefix,
+  expandGlob: expandGlob
 };
diff --git a/package.json b/package.json
index 0ad4c8c..0dfb2c9 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
     "convert-source-map": "^1.1.1",
     "docopt": "^0.6.2",
     "file-url": "^1.0.1",
+    "glob": "^7.1.2",
     "open": "0.0.5",
     "source-map": "^0.5.1",
     "temp": "^0.8.3",
diff --git a/test.js b/test.js
index 1aa0dae..e3ac2ec 100644
--- a/test.js
+++ b/test.js
@@ -3,7 +3,8 @@ var expect = require('chai').expect;
 var sourceMapExplorer = require('./index'),
   adjustSourcePaths = sourceMapExplorer.adjustSourcePaths,
   mapKeys = sourceMapExplorer.mapKeys,
-  commonPathPrefix = sourceMapExplorer.commonPathPrefix;
+  commonPathPrefix = sourceMapExplorer.commonPathPrefix,
+  expandGlob = sourceMapExplorer.expandGlob;
 
 describe('source-map-explorer', function() {
   describe('commonPathPrefix', function() {
@@ -48,4 +49,19 @@ describe('source-map-explorer', function() {
           .to.deep.equal({'/bar/foo.js': 10, '/bar/foodle.js': 20});
     });
   });
+
+  describe('command line parsing', function() {
+    expect(expandGlob({'<script.js>': 'testdata/foo.min.js*'})).to.deep.equal({
+      '<script.js>': 'testdata/foo.min.js',
+      '<script.js.map>': 'testdata/foo.min.js.map',
+    });
+
+    expect(expandGlob({
+      '<script.js>': 'foo.min.js',
+      '<script.js.map>': 'foo.min.js.map'
+    })).to.deep.equal({
+      '<script.js>': 'foo.min.js',
+      '<script.js.map>': 'foo.min.js.map'
+    });
+  });
 });