diff --git a/gst/mixmatrix/mixmatrix.c b/gst/mixmatrix/mixmatrix.c
index 1c5870abc5..fb3d1acfdf 100644
--- a/gst/mixmatrix/mixmatrix.c
+++ b/gst/mixmatrix/mixmatrix.c
@@ -77,8 +77,6 @@ enum
 enum
 {
   PROP_0,
-  PROP_GRPSIZE,
-  PROP_OUTSIZE,
   PROP_SINKPADS,
   PROP_SRCPADS,
   PROP_MATRIXPTR