diff --git a/Include/cpython/unicodeobject.h b/Include/cpython/unicodeobject.h
index 3ca6ace24c5f74..e657c13c6fb37c 100644
--- a/Include/cpython/unicodeobject.h
+++ b/Include/cpython/unicodeobject.h
@@ -134,8 +134,8 @@ typedef struct {
            set, use the PyASCIIObject structure. */
         unsigned int ascii:1;
         /* Padding to ensure that PyUnicode_DATA() is always aligned to
-           4 bytes (see issue #19537 on m68k). */
-        unsigned int :25;
+           4 bytes (see issue gh-63736 on m68k). */
+        unsigned int :26;
     } state;
 } PyASCIIObject;