diff --git a/client/mysqltest.c b/client/mysqltest.c
index 770ca7e2d2a..468b75c927f 100644
--- a/client/mysqltest.c
+++ b/client/mysqltest.c
@@ -4563,6 +4563,7 @@ int main(int argc, char **argv)
   init_var_hash(&cur_con->mysql);
 
 #ifdef __WIN__
+  init_tmp_sh_file();
   init_win_path_patterns();
 #endif