diff --git a/tests/mysql_client_test.c b/tests/mysql_client_test.c
index a043b87c294..de2824243f2 100644
--- a/tests/mysql_client_test.c
+++ b/tests/mysql_client_test.c
@@ -7849,7 +7849,7 @@ static void test_explain_bug()
   else
   {
     verify_prepare_field(result, 6, "key_len", "", MYSQL_TYPE_VAR_STRING, "", 
-                         "", "", NAME_CHAR_LEN*MAX_KEY/ my_charset_utf8_general_ci.mbmaxlen, 0);
+                         "", "", NAME_CHAR_LEN*MAX_KEY, 0);
   }
 
   verify_prepare_field(result, 7, "ref", "", MYSQL_TYPE_VAR_STRING,