diff --git a/include/clang/Driver/CC1Options.td b/include/clang/Driver/CC1Options.td
index ec6e03b..3b87dd2 100644
--- a/include/clang/Driver/CC1Options.td
+++ b/include/clang/Driver/CC1Options.td
@@ -650,9 +650,8 @@
   HelpText<"Specify the name of the module to build">;           
 def fdisable_module_hash : Flag<"-fdisable-module-hash">,
   HelpText<"Disable the module hash">;
-def fauto_module_import : Flag<"-fauto-module-import">,
-  HelpText<"Automatically translate #include/#import into module imports "
-           "when possible">;
+def fmodules : Flag<"-fmodules">,
+  HelpText<"Enable the 'modules' language feature">;
            
 def F : JoinedOrSeparate<"-F">, MetaVarName<"<directory>">,
   HelpText<"Add directory to framework include search path">;
diff --git a/include/clang/Driver/Options.td b/include/clang/Driver/Options.td
index 08b3f03..e3b50c4 100644
--- a/include/clang/Driver/Options.td
+++ b/include/clang/Driver/Options.td
@@ -380,8 +380,7 @@
 def fdelayed_template_parsing : Flag<"-fdelayed-template-parsing">, Group<f_Group>;
 def fmodule_cache_path : Separate<"-fmodule-cache-path">, Group<i_Group>, 
   Flags<[NoForward]>;
-def fauto_module_import : Flag <"-fauto-module-import">, Group<f_Group>,
-  Flags<[NoForward]>;
+def fmodules : Flag <"-fmodules">, Group<f_Group>, Flags<[NoForward]>;
   
 def fmudflapth : Flag<"-fmudflapth">, Group<f_Group>;
 def fmudflap : Flag<"-fmudflap">, Group<f_Group>;
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index f678667..b7379e7 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -395,7 +395,7 @@
     CmdArgs.push_back(Args.MakeArgString(DefaultModuleCache));
   }
   
-  Args.AddAllArgs(CmdArgs, options::OPT_fauto_module_import);
+  Args.AddAllArgs(CmdArgs, options::OPT_fmodules);
 
   // Parse additional include paths from environment variables.
   // FIXME: We should probably sink the logic for handling these from the
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 0137774..1b335c6 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -1903,7 +1903,7 @@
     Opts.TokenCache = Opts.ImplicitPTHInclude;
   Opts.UsePredefines = !Args.hasArg(OPT_undef);
   Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
-  Opts.AutoModuleImport = Args.hasArg(OPT_fauto_module_import);
+  Opts.AutoModuleImport = Args.hasArg(OPT_fmodules);
   Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
 
   Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
diff --git a/test/Modules/auto-module-import.m b/test/Modules/auto-module-import.m
index d14f9e9..429501c 100644
--- a/test/Modules/auto-module-import.m
+++ b/test/Modules/auto-module-import.m
@@ -1,7 +1,7 @@
 // other file: expected-note{{'no_umbrella_A_private' declared here}}
 
 // RUN: rm -rf %t
-// RUN: %clang_cc1 -Wauto-import -fmodule-cache-path %t -fauto-module-import -F %S/Inputs %s -verify
+// RUN: %clang_cc1 -Wauto-import -fmodule-cache-path %t -fmodules -F %S/Inputs %s -verify
 
 #include <DependsOnModule/DependsOnModule.h> // expected-warning{{treating #include as an import of module 'DependsOnModule'}}
 
diff --git a/test/Modules/inferred-submodules.m b/test/Modules/inferred-submodules.m
index 9c164d8..5fe83d2 100644
--- a/test/Modules/inferred-submodules.m
+++ b/test/Modules/inferred-submodules.m
@@ -1,5 +1,5 @@
 // RUN: rm -rf %t
-// RUN: %clang_cc1 -x objective-c -Wauto-import -fmodule-cache-path %t -fauto-module-import -F %S/Inputs %s -verify
+// RUN: %clang_cc1 -x objective-c -Wauto-import -fmodule-cache-path %t -fmodules -F %S/Inputs %s -verify
 
 __import_module__ Module.Sub;
 
diff --git a/test/Modules/normal-module-map.cpp b/test/Modules/normal-module-map.cpp
index 6aab1cb..4d2f59a 100644
--- a/test/Modules/normal-module-map.cpp
+++ b/test/Modules/normal-module-map.cpp
@@ -1,7 +1,7 @@
 // Note: inside the module. expected-note{{'nested_umbrella_a' declared here}}
 
 // RUN: rm -rf %t
-// RUN: %clang_cc1 -x objective-c -fmodule-cache-path %t -fauto-module-import -I %S/Inputs/normal-module-map %s -verify
+// RUN: %clang_cc1 -x objective-c -fmodule-cache-path %t -fmodules -I %S/Inputs/normal-module-map %s -verify
 #include "Umbrella/umbrella_sub.h"
 
 int getUmbrella() { 
diff --git a/test/Modules/requires.m b/test/Modules/requires.m
index ceb03f3..d08db64 100644
--- a/test/Modules/requires.m
+++ b/test/Modules/requires.m
@@ -1,5 +1,5 @@
 // RUN: rm -rf %t
-// RUN: %clang_cc1 -Wauto-import -fmodule-cache-path %t -fauto-module-import -F %S/Inputs %s -verify
+// RUN: %clang_cc1 -Wauto-import -fmodule-cache-path %t -fmodules -F %S/Inputs %s -verify
 
 __import_module__ DependsOnModule.CXX; // expected-error{{module 'DependsOnModule.CXX' requires feature 'cplusplus'}}
 
diff --git a/test/Modules/subframeworks.m b/test/Modules/subframeworks.m
index 2e149cc..13c8bc0 100644
--- a/test/Modules/subframeworks.m
+++ b/test/Modules/subframeworks.m
@@ -1,6 +1,6 @@
 // RUN: rm -rf %t
-// RUN: %clang_cc1 -Wauto-import -fmodule-cache-path %t -fauto-module-import -F %S/Inputs %s -verify
-// RUN: %clang_cc1 -x objective-c++ -Wauto-import -fmodule-cache-path %t -fauto-module-import -F %S/Inputs %s -verify
+// RUN: %clang_cc1 -Wauto-import -fmodule-cache-path %t -fmodules -F %S/Inputs %s -verify
+// RUN: %clang_cc1 -x objective-c++ -Wauto-import -fmodule-cache-path %t -fmodules -F %S/Inputs %s -verify
 
 __import_module__ DependsOnModule;
 
diff --git a/test/Modules/submodules-preprocess.cpp b/test/Modules/submodules-preprocess.cpp
index ed51b45..b819d40 100644
--- a/test/Modules/submodules-preprocess.cpp
+++ b/test/Modules/submodules-preprocess.cpp
@@ -1,5 +1,5 @@
 // RUN: rm -rf %t
-// RUN: %clang_cc1 -Eonly -fmodule-cache-path %t -fauto-module-import -I %S/Inputs/submodules %s -verify
+// RUN: %clang_cc1 -Eonly -fmodule-cache-path %t -fmodules -I %S/Inputs/submodules %s -verify
 
 __import_module__ std.vector;
 
diff --git a/test/Modules/submodules.cpp b/test/Modules/submodules.cpp
index ce7054f..b62d487 100644
--- a/test/Modules/submodules.cpp
+++ b/test/Modules/submodules.cpp
@@ -1,5 +1,5 @@
 // RUN: rm -rf %t
-// RUN: %clang_cc1 -fmodule-cache-path %t -fauto-module-import -I %S/Inputs/submodules %s -verify
+// RUN: %clang_cc1 -fmodule-cache-path %t -fmodules -I %S/Inputs/submodules %s -verify
 
 __import_module__ std.vector;
 
diff --git a/test/Modules/submodules.m b/test/Modules/submodules.m
index e5a050f..bbcd18c 100644
--- a/test/Modules/submodules.m
+++ b/test/Modules/submodules.m
@@ -1,6 +1,6 @@
 
 // RUN: rm -rf %t
-// RUN: %clang_cc1 -Wauto-import -fmodule-cache-path %t -fauto-module-import -F %S/Inputs %s -verify
+// RUN: %clang_cc1 -Wauto-import -fmodule-cache-path %t -fmodules -F %S/Inputs %s -verify
 
 // Note: transitively imports Module.Sub2.
 __import_module__ Module.Sub;
diff --git a/test/Modules/wildcard-submodule-exports.cpp b/test/Modules/wildcard-submodule-exports.cpp
index b892acb..a8da381 100644
--- a/test/Modules/wildcard-submodule-exports.cpp
+++ b/test/Modules/wildcard-submodule-exports.cpp
@@ -1,5 +1,5 @@
 // RUN: rm -rf %t
-// RUN: %clang_cc1 -fmodule-cache-path %t -fauto-module-import -I %S/Inputs/wildcard-submodule-exports %s -verify
+// RUN: %clang_cc1 -fmodule-cache-path %t -fmodules -I %S/Inputs/wildcard-submodule-exports %s -verify
 
 __import_module__ C.One;