diff --git a/src/framework/Utilities/UnorderedMapSet.h b/src/framework/Utilities/UnorderedMapSet.h
index 8530e97bc..15ecb63f9 100644
--- a/src/framework/Utilities/UnorderedMapSet.h
+++ b/src/framework/Utilities/UnorderedMapSet.h
@@ -91,8 +91,8 @@ HASH_NAMESPACE_END
 using std::hash_map;
 using std::hash_set;
 #elif COMPILER == COMPILER_CLANG
-#  define UNORDERED_MAP std::tr1::unordered_map
-#  define UNORDERED_SET std::tr1::unordered_set
+#  define UNORDERED_MAP std::unordered_map
+#  define UNORDERED_SET std::unordered_set
 #  define HASH_NAMESPACE_START namespace std { namespace tr1 {
 #  define HASH_NAMESPACE_END } }
 #elif COMPILER == COMPILER_GNU && (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ >= 3)