diff --git a/src/msw/fswatcher.cpp b/src/msw/fswatcher.cpp
index 0692abfdfa..bd4fc64c0b 100644
--- a/src/msw/fswatcher.cpp
+++ b/src/msw/fswatcher.cpp
@@ -385,6 +385,8 @@ int wxIOCPThread::Native2WatcherFlags(int flags)
 
         // ignored as it should always be matched with ***_OLD_NAME
         { FILE_ACTION_RENAMED_NEW_NAME, 0 },
+        // ignore invalid event
+        { 0, 0 },
     };
 
     for (unsigned int i=0; i < WXSIZEOF(flag_mapping); ++i) {