1 files changed, 1 insertions, 1 deletions
diff --git a/README.EXT b/README.EXT
index 4504e98..c65c177 100644
--- a/README.EXT
+++ b/README.EXT
@@ -807,7 +807,7 @@ namespace.
 
 Defines a new Ruby module.
 
- VALUE rb_define_module_under(VALUE module, const char *name, VALUE super)
+ VALUE rb_define_module_under(VALUE module, const char *name)
 
 Defines a new Ruby module under the module's namespace.