diff --git a/include/kernel/object.h b/include/kernel/object.h
index 74b2bd0..3444f3d 100644
--- a/include/kernel/object.h
+++ b/include/kernel/object.h
@@ -65,7 +65,7 @@ extern "C" {
 #define OBJECT_PATH_MAX 256
 
 #define OBJECT_CAST(to_type, to_type_member, p)                                \
-	((to_type *)((uintptr_t)p) - offsetof(to_type, to_type_member))
+	((to_type *)(((uintptr_t)p) - offsetof(to_type, to_type_member)))
 #define OBJECT_C_CAST(c_type, c_type_member, obj_type, objp)                   \
 	OBJECT_IS_TYPE(objp, obj_type)                                         \
 	? OBJECT_CAST(c_type, c_type_member, (objp)) : NULL