diff --git a/apps/py_sems/sip/PySemsB2ABDialog.sip b/apps/py_sems/sip/PySemsB2ABDialog.sip
index 71777a2b..6e42d1c4 100644
--- a/apps/py_sems/sip/PySemsB2ABDialog.sip
+++ b/apps/py_sems/sip/PySemsB2ABDialog.sip
@@ -75,6 +75,7 @@ private:
 };
 
 class B2ABEvent
+: AmEvent 
 {
 %TypeHeaderCode
 #include "../../../core/AmB2ABSession.h"