1 files changed, 1 insertions, 1 deletions
diff --git a/vm_core.h b/vm_core.h
index 2e8ddfe37f..2c38911d58 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -660,7 +660,7 @@ typedef struct rb_vm_struct {
     VALUE coverages;
     int coverage_mode;
 
-    VALUE defined_module_hash;
+    st_table * defined_module_hash;
 
     struct rb_objspace *objspace;