diff --git a/Source/Swig/stype.c b/Source/Swig/stype.c
index 1dd6d1f6d..e5c3efd46 100644
--- a/Source/Swig/stype.c
+++ b/Source/Swig/stype.c
@@ -1486,7 +1486,6 @@ void SwigType_inherit_equiv(File *out) {
     base = SwigType_base(rkey);
     sub = Getattr(subclass,base);
     if (!sub) {
-      Delete(base);
       rkey = Nextkey(r_resolved);
       continue;
     }