1 files changed, 3 insertions, 3 deletions
diff --git a/intern/cycles/util/util_types.h b/intern/cycles/util/util_types.h
index dcd0b78e4a4..dde5cbab0fb 100644
--- a/intern/cycles/util/util_types.h
+++ b/intern/cycles/util/util_types.h
@@ -180,7 +180,7 @@ struct ccl_try_align(16) int3 {
 	};
 
 	__forceinline int3() {}
-	__forceinline int3(const __m128i a) : m128(a) {}
+	__forceinline int3(const __m128i& a) : m128(a) {}
 	__forceinline operator const __m128i&(void) const { return m128; }
 	__forceinline operator __m128i&(void) { return m128; }
 
@@ -202,7 +202,7 @@ struct ccl_try_align(16) int4 {
 	};
 
 	__forceinline int4() {}
-	__forceinline int4(const __m128i a) : m128(a) {}
+	__forceinline int4(const __m128i& a) : m128(a) {}
 	__forceinline operator const __m128i&(void) const { return m128; }
 	__forceinline operator __m128i&(void) { return m128; }
 
@@ -274,7 +274,7 @@ struct ccl_try_align(16) float4 {
 	};
 
 	__forceinline float4() {}
-	__forceinline float4(const __m128 a) : m128(a) {}
+	__forceinline float4(const __m128& a) : m128(a) {}
 	__forceinline operator const __m128&(void) const { return m128; }
 	__forceinline operator __m128&(void) { return m128; }