diff --git a/clang/lib/Headers/xmmintrin.h b/clang/lib/Headers/xmmintrin.h
index 2903049170c2..4938399063cd 100644
--- a/clang/lib/Headers/xmmintrin.h
+++ b/clang/lib/Headers/xmmintrin.h
@@ -898,6 +898,8 @@ do { \
   (row3) = _mm_movelh_ps(tmp3, tmp1); \
 } while (0)
 
+#include <emmintrin.h>
+
 #endif /* __SSE__ */
 
 #endif /* __XMMINTRIN_H */