diff --git a/gst/isomp4/qtdemux.c b/gst/isomp4/qtdemux.c
index 55d04eac49..ca5f9d5a7a 100644
--- a/gst/isomp4/qtdemux.c
+++ b/gst/isomp4/qtdemux.c
@@ -5542,7 +5542,7 @@ gst_qtdemux_configure_stream (GstQTDemux * qtdemux, QtDemuxStream * stream)
         stream->fps_d = factor;
       else
         stream->fps_d =
-            gst_util_uint64_scale_int_round (factor, stream->duration,
+            gst_util_uint64_scale_int_round (stream->duration, factor,
             stream->n_samples);
     }