diff --git a/clang/lib/Headers/emmintrin.h b/clang/lib/Headers/emmintrin.h
index a78eb54c45a9..b3f8569524b9 100644
--- a/clang/lib/Headers/emmintrin.h
+++ b/clang/lib/Headers/emmintrin.h
@@ -1366,7 +1366,7 @@ _mm_movepi64_pi64(__m128i __a)
 }
 
 static __inline__ __m128i __attribute__((__always_inline__, __nodebug__))
-_mm_movpi64_pi64(__m64 __a)
+_mm_movpi64_epi64(__m64 __a)
 {
   return (__m128i){ (long long)__a, 0 };
 }