diff --git a/actions/add.action.ts b/actions/add.action.ts
index 51c5f691b..f91e23f08 100644
--- a/actions/add.action.ts
+++ b/actions/add.action.ts
@@ -3,19 +3,19 @@ import { Input } from '../commands';
 import { getValueOrDefault } from '../lib/compiler/helpers/get-value-or-default';
 import {
   AbstractPackageManager,
-  PackageManagerFactory,
+  PackageManagerFactory
 } from '../lib/package-managers';
 import {
   AbstractCollection,
   CollectionFactory,
-  SchematicOption,
+  SchematicOption
 } from '../lib/schematics';
 import { MESSAGES } from '../lib/ui';
 import { loadConfiguration } from '../lib/utils/load-configuration';
 import {
   askForProjectName,
   moveDefaultProjectToStart,
-  shouldAskForProject,
+  shouldAskForProject
 } from '../lib/utils/project-utils';
 import { AbstractAction } from './abstract.action';
 
@@ -44,6 +44,7 @@ export class AddAction extends AbstractAction {
           MESSAGES.LIBRARY_INSTALLATION_FAILED_BAD_PACKAGE(libraryName),
         ),
       );
+      throw new Error(MESSAGES.LIBRARY_INSTALLATION_FAILED_BAD_PACKAGE(libraryName));
     }
   }
 
diff --git a/actions/build.action.ts b/actions/build.action.ts
index 9658dcc23..7553afc0e 100644
--- a/actions/build.action.ts
+++ b/actions/build.action.ts
@@ -13,7 +13,7 @@ import { WebpackCompiler } from '../lib/compiler/webpack-compiler';
 import { WorkspaceUtils } from '../lib/compiler/workspace-utils';
 import {
   ConfigurationLoader,
-  NestConfigurationLoader,
+  NestConfigurationLoader
 } from '../lib/configuration';
 import { defaultOutDir } from '../lib/configuration/defaults';
 import { FileSystemReader } from '../lib/readers';
@@ -62,6 +62,7 @@ export class BuildAction extends AbstractAction {
       } else {
         console.error(`\n${chalk.red(err)}\n`);
       }
+      process.exit(1);
     }
   }
 
diff --git a/commands/add.command.ts b/commands/add.command.ts
index 9f1aaa350..ad7c6b7d9 100644
--- a/commands/add.command.ts
+++ b/commands/add.command.ts
@@ -30,7 +30,7 @@ export class AddCommand extends AbstractCommand {
         try {
           await this.action.handle(inputs, options, flags);
         } catch (err) {
-          process.exit(0);
+          process.exit(1);
         }
       });
   }