--- a/Preferences/__init__.py	Thu Feb 14 19:17:11 2019 +0100
+++ b/Preferences/__init__.py	Fri Feb 15 18:58:49 2019 +0100
@@ -434,6 +434,7 @@
         # show QScintilla completions, if plug-in fails
         "AutoCompletionScintillaOnFail": False,
         "AutoCompletionReversedList": False,
+        "AutoCompletionCacheEnabled": True,
         "AutoCompletionCacheSize": 100,
         "AutoCompletionCacheTime": 300,     # 5 minutes
         "AutoCompletionWatchdogTime": 3000,     # ms