diff --git a/NEWS b/NEWS
index 224ed83fae3..75b850933a9 100644
--- a/NEWS
+++ b/NEWS
@@ -27,6 +27,7 @@ PHP                                                                        NEWS
   . Fixed bug #47021 (SoapClient stumbles over WSDL delivered with
     "Transfer-Encoding: chunked"). (Rowan Collins)
   . Fixed bug #72974 (imap is undefined service on AIX). (matthieu.sarter)
+  . Fixed bug #72979 (money_format stores wrong length AIX). (matthieu.sarter)
 
 - ZIP:
   . Fixed bug #70103 (ZipArchive::addGlob ignores remove_all_path option). (cmb,
diff --git a/ext/standard/string.c b/ext/standard/string.c
index 613247bd190..8fd2c55e20e 100644
--- a/ext/standard/string.c
+++ b/ext/standard/string.c
@@ -5514,7 +5514,15 @@ PHP_FUNCTION(money_format)
 		zend_string_free(str);
 		RETURN_FALSE;
 	}
+#ifdef _AIX
+	/*
+	On AIX strfmon seems to include the terminating \0 in the length returned by strfmon,
+	despite the documentation indicating it is not included.
+	*/
+	ZSTR_LEN(str) = strlen(ZSTR_VAL(str));
+#else
 	ZSTR_LEN(str) = (size_t)res_len;
+#endif
 	ZSTR_VAL(str)[ZSTR_LEN(str)] = '\0';
 
 	RETURN_NEW_STR(zend_string_truncate(str, ZSTR_LEN(str), 0));