diff --git a/markdown/application-development/advanced/pipeline-manipulation.md b/markdown/application-development/advanced/pipeline-manipulation.md
index 47bb00a860..ecc5f1b1ed 100644
--- a/markdown/application-development/advanced/pipeline-manipulation.md
+++ b/markdown/application-development/advanced/pipeline-manipulation.md
@@ -881,6 +881,7 @@ main (int argc, char *argv[])
 
   /* cleanup and exit */
   gst_element_set_state (pipeline, GST_STATE_NULL);
+  gst_object_unref (sink);
   gst_object_unref (pipeline);
 
   exit (0);