diff --git a/libswscale/swscale_internal.h b/libswscale/swscale_internal.h
index f4011d3de3..a401175a26 100644
--- a/libswscale/swscale_internal.h
+++ b/libswscale/swscale_internal.h
@@ -126,6 +126,7 @@ typedef struct SwsContext{
     int srcColorspaceTable[4];
     int dstColorspaceTable[4];
     int srcRange, dstRange;
+    int oy,cy,cvr,cvg,cug,cub;
 
 #define RED_DITHER            "0*8"
 #define GREEN_DITHER          "1*8"