diff --git a/ide/main.pp b/ide/main.pp
index 6bae4902d1..c0f134686d 100644
--- a/ide/main.pp
+++ b/ide/main.pp
@@ -1666,6 +1666,7 @@ begin
   FreeThenNil(SearchResultsView);
   FreeThenNil(ObjectInspector1);
   FreeThenNil(SourceEditorManagerIntf);
+  FreeAndNil(FIdentCompletionWords);
 
   // disconnect handlers
   Application.RemoveAllHandlersOfObject(Self);