diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index 9cb7e8f6ac..481176c084 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -769,7 +769,8 @@ int attribute_align_arg sws_scale(struct SwsContext *c,
 
     if ((srcSliceY & (macro_height-1)) ||
         ((srcSliceH& (macro_height-1)) && srcSliceY + srcSliceH != c->srcH) ||
-        srcSliceY + srcSliceH > c->srcH) {
+        srcSliceY + srcSliceH > c->srcH ||
+        (isBayer(c->srcFormat) && srcSliceH <= 1)) {
         av_log(c, AV_LOG_ERROR, "Slice parameters %d, %d are invalid\n", srcSliceY, srcSliceH);
         return AVERROR(EINVAL);
     }