diff --git a/gst/audioconvert/gstaudioconvert.c b/gst/audioconvert/gstaudioconvert.c
index afe23aaa29..934c3b48d3 100644
--- a/gst/audioconvert/gstaudioconvert.c
+++ b/gst/audioconvert/gstaudioconvert.c
@@ -548,6 +548,8 @@ gst_audio_convert_fixate_caps (GstBaseTransform * base,
       gst_structure_fixate_field_nearest_int (outs, "rate", rate);
     }
   }
+
+  gst_caps_truncate (othercaps);
   GST_DEBUG_OBJECT (base, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
 }