diff --git a/Modules/_weakref.c b/Modules/_weakref.c
index b1a5b7dd639939..90c7afcc248ff3 100644
--- a/Modules/_weakref.c
+++ b/Modules/_weakref.c
@@ -1,7 +1,7 @@
 #include "Python.h"
-#include "pycore_critical_section.h"  // Py_BEGIN_CRITICAL_SECTION
+#include "pycore_critical_section.h"  // Py_BEGIN_CRITICAL_SECTION()
 #include "pycore_dict.h"              // _PyDict_DelItemIf()
-#include "pycore_object.h"            // _PyObject_GET_WEAKREFS_LISTPTR
+#include "pycore_object.h"            // _PyObject_GET_WEAKREFS_LISTPTR()
 #include "pycore_weakref.h"           // _PyWeakref_IS_DEAD()
 
 #define GET_WEAKREFS_LISTPTR(o) \