diff --git a/ext/wayland/gstwaylandsink.c b/ext/wayland/gstwaylandsink.c
index c5556e7bda..365df7ce5a 100644
--- a/ext/wayland/gstwaylandsink.c
+++ b/ext/wayland/gstwaylandsink.c
@@ -477,7 +477,7 @@ gst_wayland_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
     goto invalid_format;
 
   format = gst_video_format_to_wayland_format (GST_VIDEO_INFO_FORMAT (&info));
-  if (format == -1)
+  if ((gint) format == -1)
     goto invalid_format;
 
   /* verify we support the requested format */