diff --git a/test/PCH/method-redecls.m b/test/PCH/method-redecls.m
index 14ce3ac..a11bf5a 100644
--- a/test/PCH/method-redecls.m
+++ b/test/PCH/method-redecls.m
@@ -1,4 +1,5 @@
 // RUN: %clang_cc1 -x objective-c -emit-pch -o %t
+// RUN: %clang_cc1 -x objective-c -emit-pch -o %t -D IMPL
 
 // Avoid infinite loop because of method redeclarations.
 
@@ -8,6 +9,10 @@
 -(void)meth;
 @end
 
+#ifdef IMPL
+
 @implementation Foo
 -(void)meth { }
 @end
+
+#endif