1 files changed, 4 insertions, 1 deletions
diff --git a/sys/oss/gstosssink.c b/sys/oss/gstosssink.c
index d2935760..e9c7438c 100644
--- a/sys/oss/gstosssink.c
+++ b/sys/oss/gstosssink.c
@@ -152,7 +152,10 @@ gst_osssink_dispose (GObject * object)
 {
   GstOssSink *osssink = (GstOssSink *) object;
 
-  gst_object_unparent (GST_OBJECT (osssink->provided_clock));
+  if (osssink->provided_clock) {
+    gst_object_unparent (GST_OBJECT (osssink->provided_clock));
+    osssink->provided_clock = NULL;
+  }
 
   G_OBJECT_CLASS (parent_class)->dispose (object);
 }