diff --git a/Modules/pyexpat.c b/Modules/pyexpat.c
index e0c9be7..653295b 100644
--- a/Modules/pyexpat.c
+++ b/Modules/pyexpat.c
@@ -1188,7 +1188,7 @@
         Py_DECREF(self);
         return NULL;
     }
-#if ((XML_MAJOR_VERSION >= 2) && (XML_MINOR_VERSION >= 1)) || defined(XML_HAS_SET_HASH_SALT)
+#if XML_COMBINED_VERSION >= 20100 || defined(XML_HAS_SET_HASH_SALT)
     /* This feature was added upstream in libexpat 2.1.0.  Our expat copy
      * has a backport of this feature where we also define XML_HAS_SET_HASH_SALT
      * to indicate that we can still use it. */