diff --git a/Lib/idlelib/MultiCall.py b/Lib/idlelib/MultiCall.py
index ea8b140..547df13 100644
--- a/Lib/idlelib/MultiCall.py
+++ b/Lib/idlelib/MultiCall.py
@@ -349,6 +349,8 @@
                     triplets.append(triplet)
 
         def event_delete(self, virtual, *sequences):
+            if virtual not in self.__eventinfo:
+                return
             func, triplets = self.__eventinfo[virtual]
             for seq in sequences:
                 triplet = _parse_sequence(seq)