diff --git a/BCL.csproj b/BCL.csproj
index c0baf8b47..89e8cb413 100644
--- a/BCL.csproj
+++ b/BCL.csproj
@@ -110,6 +110,9 @@
     </TypeScriptCompile>
     <TypeScriptCompile Include="file-system\file-system.d.ts" />
     <TypeScriptCompile Include="file-system\file-system-access.d.ts" />
+    <TypeScriptCompile Include="file-system\file-system.impl.ts">
+      <DependentUpon>file-system.d.ts</DependentUpon>
+    </TypeScriptCompile>
     <TypeScriptCompile Include="image-source\image-source-native.android.ts">
       <DependentUpon>image-source-native.d.ts</DependentUpon>
     </TypeScriptCompile>
@@ -170,9 +173,6 @@
       <DependentUpon>timer.d.ts</DependentUpon>
     </TypeScriptCompile>
     <TypeScriptCompile Include="Tests\local-settings-tests.ts" />
-    <TypeScriptCompile Include="file-system\file-system.ts">
-      <DependentUpon>file-system.d.ts</DependentUpon>
-    </TypeScriptCompile>
     <TypeScriptCompile Include="file-system\file-system-access.android.ts">
       <DependentUpon>file-system-access.d.ts</DependentUpon>
     </TypeScriptCompile>
diff --git a/file-system/file-system.ts b/file-system/file-system.impl.ts
similarity index 98%
rename from file-system/file-system.ts
rename to file-system/file-system.impl.ts
index a5ebe9d4d..09d26bef1 100644
--- a/file-system/file-system.ts
+++ b/file-system/file-system.impl.ts
@@ -49,9 +49,6 @@ var createFolder = function (info: { path: string; name: string; }) {
 };
 
 export class FileSystemEntity {
-    /**
-    * Gets the Folder object representing the parent of this entity. Will be null for a root folder like Documents or Temporary.
-    */
     get parent(): Folder {
         var onError = function (error) {
             throw error;