diff --git a/apps/py_sems/sip/AmSipDialog.sip b/apps/py_sems/sip/AmSipDialog.sip
index 661f2f36..38dcbf50 100644
--- a/apps/py_sems/sip/AmSipDialog.sip
+++ b/apps/py_sems/sip/AmSipDialog.sip
@@ -59,7 +59,9 @@ public:
 
     int cancel();
 
-    int update(const string& /* hdrs */);
+    int update(const string& /* content_type */,
+	       const string& /* body */
+	       const string& /* hdrs */);
 
     int reinvite(const string& /* hdrs */,
 		 const string& /* content_type */,