diff --git a/docs/documentation/build.md b/docs/documentation/build.md
index 6577e905f1..ba25703f56 100644
--- a/docs/documentation/build.md
+++ b/docs/documentation/build.md
@@ -113,7 +113,7 @@ See https://github.com/angular/angular-cli/issues/7797 for details.
     <code>--optimization</code>
   </p>
   <p>
-    Defines the optimization level of the build.
+    Enables optimization of the build output.
   </p>
 </details>
 <details>
diff --git a/docs/documentation/serve.md b/docs/documentation/serve.md
index d99466bdbc..b064c71ab3 100644
--- a/docs/documentation/serve.md
+++ b/docs/documentation/serve.md
@@ -178,7 +178,7 @@ ng serve [project]
     <code>--optimization</code>
   </p>
   <p>
-    Defines the optimization level of the build.
+    Enables optimization of the build output.
   </p>
 </details>
 <details>
diff --git a/packages/angular/cli/lib/config/schema.json b/packages/angular/cli/lib/config/schema.json
index e2b067df91..4183c0aee9 100644
--- a/packages/angular/cli/lib/config/schema.json
+++ b/packages/angular/cli/lib/config/schema.json
@@ -580,7 +580,7 @@
             },
             "optimization": {
               "type": "boolean",
-              "description": "Defines the optimization level of the build.",
+              "description": "Enables optimization of the build output.",
               "default": false
             },
             "fileReplacements": {
@@ -995,7 +995,7 @@
             },
             "optimization": {
               "type": "boolean",
-              "description": "Defines the optimization level of the build."
+              "description": "Enables optimization of the build output."
             },
             "aot": {
               "type": "boolean",
@@ -1373,7 +1373,7 @@
             },
             "optimization": {
               "type": "boolean",
-              "description": "Defines the optimization level of the build.",
+              "description": "Enables optimization of the build output.",
               "default": false
             },
             "fileReplacements": {
diff --git a/packages/angular_devkit/build_angular/src/browser/schema.d.ts b/packages/angular_devkit/build_angular/src/browser/schema.d.ts
index eb887a851f..0cd707918e 100644
--- a/packages/angular_devkit/build_angular/src/browser/schema.d.ts
+++ b/packages/angular_devkit/build_angular/src/browser/schema.d.ts
@@ -42,7 +42,7 @@ export interface BrowserBuilderSchema {
   stylePreprocessorOptions?: StylePreprocessorOptions;
 
   /**
-   * Defines the optimization level of the build.
+   * Enables optimization of the build output.
    */
   optimization: boolean;
 
diff --git a/packages/angular_devkit/build_angular/src/browser/schema.json b/packages/angular_devkit/build_angular/src/browser/schema.json
index d013f123e6..61aab484cf 100644
--- a/packages/angular_devkit/build_angular/src/browser/schema.json
+++ b/packages/angular_devkit/build_angular/src/browser/schema.json
@@ -55,7 +55,7 @@
     },
     "optimization": {
       "type": "boolean",
-      "description": "Defines the optimization level of the build.",
+      "description": "Enables optimization of the build output.",
       "default": false
     },
     "fileReplacements": {
diff --git a/packages/angular_devkit/build_angular/src/dev-server/schema.json b/packages/angular_devkit/build_angular/src/dev-server/schema.json
index 1ae1260ddb..aca802e180 100644
--- a/packages/angular_devkit/build_angular/src/dev-server/schema.json
+++ b/packages/angular_devkit/build_angular/src/dev-server/schema.json
@@ -80,7 +80,7 @@
     },
     "optimization": {
       "type": "boolean",
-      "description": "Defines the optimization level of the build."
+      "description": "Enables optimization of the build output."
     },
     "aot": {
       "type": "boolean",
diff --git a/packages/angular_devkit/build_angular/src/server/schema.d.ts b/packages/angular_devkit/build_angular/src/server/schema.d.ts
index 976cea6e2b..16beda1fd8 100644
--- a/packages/angular_devkit/build_angular/src/server/schema.d.ts
+++ b/packages/angular_devkit/build_angular/src/server/schema.d.ts
@@ -61,7 +61,7 @@ export interface BuildWebpackServerSchema {
    */
   bundleDependencies?: BundleDependencies;
   /**
-   * Defines the optimization level of the build.
+   * Enables optimization of the build output.
    */
   optimization?: boolean;
   /**
diff --git a/packages/angular_devkit/build_angular/src/server/schema.json b/packages/angular_devkit/build_angular/src/server/schema.json
index d18952ac4c..147d538342 100644
--- a/packages/angular_devkit/build_angular/src/server/schema.json
+++ b/packages/angular_devkit/build_angular/src/server/schema.json
@@ -29,7 +29,7 @@
     },
     "optimization": {
       "type": "boolean",
-      "description": "Defines the optimization level of the build.",
+      "description": "Enables optimization of the build output.",
       "default": false
     },
     "fileReplacements": {