diff --git a/libavutil/imgutils.c b/libavutil/imgutils.c
index a8b4d2a7f7..813724bea7 100644
--- a/libavutil/imgutils.c
+++ b/libavutil/imgutils.c
@@ -170,7 +170,7 @@ int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt)
         default:
             return AVERROR(EINVAL);
         }
-        pal[i] = b + (g<<8) + (r<<16);
+        pal[i] = b + (g << 8) + (r << 16) + (0xFFU << 24);
     }
 
     return 0;