diff --git a/gst-libs/gst/video/gstvideoaggregator.c b/gst-libs/gst/video/gstvideoaggregator.c
index 57d2873..13a1b59 100644
--- a/gst-libs/gst/video/gstvideoaggregator.c
+++ b/gst-libs/gst/video/gstvideoaggregator.c
@@ -778,10 +778,9 @@
   finfo = vagg->info.finfo;
 
   if (at_least_one_alpha && !(finfo->flags & GST_VIDEO_FORMAT_FLAG_ALPHA)) {
-    GST_ELEMENT_ERROR (vagg, CORE, NEGOTIATION,
+    GST_WARNING_OBJECT (vagg,
         ("At least one of the input pads contains alpha, but configured caps don't support alpha."),
         ("Either convert your inputs to not contain alpha or add a videoconvert after the aggregator"));
-    return FALSE;
   }
 
   /* Then browse the sinks once more, setting or unsetting conversion if needed */