diff --git a/libswscale/swscale_internal.h b/libswscale/swscale_internal.h
index 5caf2ae6a8..335e1f8d7e 100644
--- a/libswscale/swscale_internal.h
+++ b/libswscale/swscale_internal.h
@@ -778,6 +778,8 @@ static av_always_inline int isALPHA(enum AVPixelFormat pix_fmt)
         || (x)==AV_PIX_FMT_YVYU422     \
         || (x)==AV_PIX_FMT_UYVY422     \
         || (x)==AV_PIX_FMT_YA8       \
+        || (x)==AV_PIX_FMT_YA16LE      \
+        || (x)==AV_PIX_FMT_YA16BE      \
         ||  isRGBinInt(x)           \
         ||  isBGRinInt(x)           \
     )