diff --git a/ChangeLog b/ChangeLog
index 145fba9efc..c656f0b0e5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2008-10-06  Wim Taymans  <wim.taymans@collabora.co.uk>
+
+	Patch by: Antoine Tremblay <hexa00 at gmail dot com>
+
+	* gst/gstpad.c: (gst_pad_link_check_compatible_unlocked):
+	Original patch by : Simon Descaries
+	Fix small refount leak in caps compatibility check.
+	Fixes #551676.
+
 2008-10-06  Stefan Kost  <ensonic@users.sf.net>
 
 	* docs/pwg/advanced-request.xml:
diff --git a/common b/common
index 1ff63d8f92..ea93f2ed58 160000
--- a/common
+++ b/common
@@ -1 +1 @@
-Subproject commit 1ff63d8f92c36bf207434436f4ce75f2a4ea11a4
+Subproject commit ea93f2ed580bcc19322e4c07f677eda980c821eb
diff --git a/gst/gstpad.c b/gst/gstpad.c
index b610ca7265..6a52cef0d9 100644
--- a/gst/gstpad.c
+++ b/gst/gstpad.c
@@ -1679,8 +1679,13 @@ gst_pad_link_check_compatible_unlocked (GstPad * src, GstPad * sink)
 
   /* if we have caps on both pads we can check the intersection. If one
    * of the caps is NULL, we return TRUE. */
-  if (srccaps == NULL || sinkcaps == NULL)
+  if (srccaps == NULL || sinkcaps == NULL) {
+    if (srccaps)
+      gst_caps_unref (srccaps);
+    if (sinkcaps)
+      gst_caps_unref (sinkcaps);
     goto done;
+  }
 
   icaps = gst_caps_intersect (srccaps, sinkcaps);
   gst_caps_unref (srccaps);