diff --git a/libswscale/x86/yuv2rgb_template.c b/libswscale/x86/yuv2rgb_template.c
index c8d7ca5677..bdc347e799 100644
--- a/libswscale/x86/yuv2rgb_template.c
+++ b/libswscale/x86/yuv2rgb_template.c
@@ -42,7 +42,7 @@
 #define SFENCE "sfence"
 #else
 #define MOVNTQ "movq"
-#define SFENCE "/nop"
+#define SFENCE " # nop"
 #endif
 
 #define YUV2RGB \