diff --git a/modules/@angular/core/src/animation/animation_style_util.ts b/modules/@angular/core/src/animation/animation_style_util.ts
index 94f9d15bef..18e4df4240 100644
--- a/modules/@angular/core/src/animation/animation_style_util.ts
+++ b/modules/@angular/core/src/animation/animation_style_util.ts
@@ -7,7 +7,7 @@
  */
 
 import {ListWrapper, StringMapWrapper} from '../facade/collection';
-import {isArray, isPresent} from '../facade/lang';
+import {isPresent} from '../facade/lang';
 
 import {FILL_STYLE_FLAG} from './animation_constants';
 import {AUTO_STYLE} from './metadata';
diff --git a/modules/@angular/core/src/application_module.ts b/modules/@angular/core/src/application_module.ts
index 08dab495d3..3c2edb1770 100644
--- a/modules/@angular/core/src/application_module.ts
+++ b/modules/@angular/core/src/application_module.ts
@@ -7,10 +7,9 @@
  */
 
 import {ApplicationInitStatus} from './application_init';
-import {ApplicationRef, ApplicationRef_, isDevMode} from './application_ref';
+import {ApplicationRef, ApplicationRef_} from './application_ref';
 import {APP_ID_RANDOM_PROVIDER} from './application_tokens';
 import {IterableDiffers, KeyValueDiffers, defaultIterableDiffers, defaultKeyValueDiffers} from './change_detection/change_detection';
-import {OptionalMetadata, SkipSelfMetadata} from './di';
 import {Compiler} from './linker/compiler';
 import {ComponentResolver} from './linker/component_resolver';
 import {DynamicComponentLoader, DynamicComponentLoader_} from './linker/dynamic_component_loader';
diff --git a/modules/@angular/core/src/application_ref.ts b/modules/@angular/core/src/application_ref.ts
index 088e12b233..01a17ca0b4 100644
--- a/modules/@angular/core/src/application_ref.ts
+++ b/modules/@angular/core/src/application_ref.ts
@@ -14,11 +14,10 @@ import {ApplicationInitStatus} from './application_init';
 import {APP_BOOTSTRAP_LISTENER, PLATFORM_INITIALIZER} from './application_tokens';
 import {ChangeDetectorRef} from './change_detection/change_detector_ref';
 import {Console} from './console';
-import {Inject, Injectable, Injector, OpaqueToken, Optional, ReflectiveInjector, SkipSelf, forwardRef} from './di';
-import {Compiler, CompilerFactory, CompilerOptions} from './linker/compiler';
+import {Injectable, Injector, OpaqueToken, Optional, ReflectiveInjector} from './di';
+import {CompilerFactory, CompilerOptions} from './linker/compiler';
 import {ComponentFactory, ComponentRef} from './linker/component_factory';
 import {ComponentFactoryResolver} from './linker/component_factory_resolver';
-import {ComponentResolver} from './linker/component_resolver';
 import {NgModuleFactory, NgModuleInjector, NgModuleRef} from './linker/ng_module_factory';
 import {WtfScopeFn, wtfCreateScope, wtfLeave} from './profile/profile';
 import {Testability, TestabilityRegistry} from './testability/testability';
diff --git a/modules/@angular/core/src/debug/debug_renderer.ts b/modules/@angular/core/src/debug/debug_renderer.ts
index a38397007f..a4b259e941 100644
--- a/modules/@angular/core/src/debug/debug_renderer.ts
+++ b/modules/@angular/core/src/debug/debug_renderer.ts
@@ -6,7 +6,6 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {StringMapWrapper} from '../../src/facade/collection';
 import {AnimationKeyframe} from '../animation/animation_keyframe';
 import {AnimationPlayer} from '../animation/animation_player';
 import {AnimationStyles} from '../animation/animation_styles';
diff --git a/modules/@angular/core/src/linker/system_js_ng_module_factory_loader.ts b/modules/@angular/core/src/linker/system_js_ng_module_factory_loader.ts
index 1cc94f1588..82da26b23c 100644
--- a/modules/@angular/core/src/linker/system_js_ng_module_factory_loader.ts
+++ b/modules/@angular/core/src/linker/system_js_ng_module_factory_loader.ts
@@ -7,7 +7,7 @@
  */
 
 
-import {Injectable, Optional} from '../di';
+import {Injectable} from '../di';
 
 import {Compiler} from './compiler';
 import {NgModuleFactory} from './ng_module_factory';