diff --git a/test/SemaObjC/DoubleMethod.m b/test/SemaObjC/DoubleMethod.m
index 6c7e907..3452dbe 100644
--- a/test/SemaObjC/DoubleMethod.m
+++ b/test/SemaObjC/DoubleMethod.m
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -Wduplicate-method-match -fsyntax-only -verify %s
 
 @interface Subclass
 {
diff --git a/test/SemaObjC/check-dup-decl-methods-1.m b/test/SemaObjC/check-dup-decl-methods-1.m
index 667c381..3895667 100644
--- a/test/SemaObjC/check-dup-decl-methods-1.m
+++ b/test/SemaObjC/check-dup-decl-methods-1.m
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -Wduplicate-method-match -fsyntax-only -verify %s
 
 @interface SUPER
 - (int) meth;
diff --git a/test/SemaObjC/class-conforming-protocol-1.m b/test/SemaObjC/class-conforming-protocol-1.m
index 5d4e86d..115ddd2 100644
--- a/test/SemaObjC/class-conforming-protocol-1.m
+++ b/test/SemaObjC/class-conforming-protocol-1.m
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -Wduplicate-method-match -fsyntax-only -verify %s
 
 @protocol P1 @end
 @protocol P2 @end