1 files changed, 2 insertions, 0 deletions
diff --git a/class.c b/class.c
index 4fbdf18fb7..02e682688c 100644
--- a/class.c
+++ b/class.c
@@ -699,6 +699,8 @@ rb_include_module(VALUE klass, VALUE module)
 	c = RCLASS_SUPER(c) = include_class_new(module, RCLASS_SUPER(c));
 	if (RMODULE_M_TBL(module) && RMODULE_M_TBL(module)->num_entries)
 	    changed = 1;
+	if (RMODULE_CONST_TBL(module) && RMODULE_CONST_TBL(module)->num_entries)
+	    changed = 1;
       skip:
 	module = RCLASS_SUPER(module);
     }