diff --git a/src/reflect/value.go b/src/reflect/value.go
index cc5f0913..a30d8f77 100644
--- a/src/reflect/value.go
+++ b/src/reflect/value.go
@@ -988,7 +988,7 @@ func (v Value) SetBytes(x []byte) {
 	}
 
 	// copy the header contents over
-	*(*sliceHeader)(v.value) = *(*sliceHeader)(unsafe.Pointer(&x))
+	*(*[]byte)(v.value) = x
 }
 
 func (v Value) SetCap(n int) {