diff --git a/lib/Lex/Lexer.cpp b/lib/Lex/Lexer.cpp
index 1dd9e5a..2d3c1c8 100644
--- a/lib/Lex/Lexer.cpp
+++ b/lib/Lex/Lexer.cpp
@@ -43,6 +43,8 @@
 
 /// isObjCAtKeyword - Return true if we have an ObjC keyword identifier.
 bool Token::isObjCAtKeyword(tok::ObjCKeywordKind objcKey) const {
+  if (isAnnotation())
+    return false;
   if (IdentifierInfo *II = getIdentifierInfo())
     return II->getObjCKeywordID() == objcKey;
   return false;
@@ -50,6 +52,8 @@
 
 /// getObjCKeywordID - Return the ObjC keyword kind.
 tok::ObjCKeywordKind Token::getObjCKeywordID() const {
+  if (isAnnotation())
+    return tok::objc_not_keyword;
   IdentifierInfo *specId = getIdentifierInfo();
   return specId ? specId->getObjCKeywordID() : tok::objc_not_keyword;
 }
diff --git a/test/Modules/Inputs/module.map b/test/Modules/Inputs/module.map
index b95eec3..094578a 100644
--- a/test/Modules/Inputs/module.map
+++ b/test/Modules/Inputs/module.map
@@ -437,3 +437,7 @@
   header "DebugNestedB.h"
   export *
 }
+
+module objcAtKeywordMissingEnd {
+  header "objcAtKeywordMissingEnd.h"
+}
diff --git a/test/Modules/Inputs/objcAtKeywordMissingEnd.h b/test/Modules/Inputs/objcAtKeywordMissingEnd.h
new file mode 100644
index 0000000..1196b87
--- /dev/null
+++ b/test/Modules/Inputs/objcAtKeywordMissingEnd.h
@@ -0,0 +1,3 @@
+@interface MissingEnd // expected-note {{class started here}}
+
+@ // expected-error {{expected an Objective-C directive after '@'}} expected-error {{missing '@end'}}
diff --git a/test/Modules/objc-at-keyword.m b/test/Modules/objc-at-keyword.m
new file mode 100644
index 0000000..0e058a3
--- /dev/null
+++ b/test/Modules/objc-at-keyword.m
@@ -0,0 +1,7 @@
+// RUN: rm -rf %t
+// RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -verify -x objective-c -fmodule-name=objcAtKeywordMissingEnd -emit-module %S/Inputs/module.map
+// RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -x objective-c -fmodule-name=Empty -emit-module %S/Inputs/module.map
+// RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -verify -I %S/Inputs %s
+
+@interface X // expected-note {{class started here}}
+#pragma clang module import Empty // expected-error {{missing '@end'}}