diff --git a/src/object.c b/src/object.c
index 0d352b8..71c033f 100644
--- a/src/object.c
+++ b/src/object.c
@@ -122,7 +122,7 @@ cfw_free(void *ptr)
 CFWClass*
 cfw_class(void *ptr)
 {
-	CFWObject *obj;
+	CFWObject *obj = ptr;
 
 	return obj->cls;
 }