diff --git a/py/makeqstrdefs.py b/py/makeqstrdefs.py
index f035ed5745de6..974227f2a5f4e 100644
--- a/py/makeqstrdefs.py
+++ b/py/makeqstrdefs.py
@@ -65,6 +65,7 @@
 # These are just vexing!
 del name2codepoint["and"]
 del name2codepoint["or"]
+del name2codepoint["not"]
 
 
 def preprocess():