diff --git a/py/qstrdefs.h b/py/qstrdefs.h
index 368b0fc..591c96a 100644
--- a/py/qstrdefs.h
+++ b/py/qstrdefs.h
@@ -27,6 +27,7 @@
 Q(__repr__)
 Q(__str__)
 Q(__getattr__)
+Q(__del__)
 
 Q(micropython)
 Q(byte_code)