--- a/interpret.h	2022-09-05 21:34:14.441244455 +0200
+++ b/interpret.h	2022-09-05 21:34:54.720290502 +0200
@@ -238,6 +238,7 @@
 						_("reference to uninitialized argument `%s'") :
 						_("reference to uninitialized variable `%s'"),
 								save_symbol->vname);
+				UPREF(m);
 				PUSH(m);
 				break;