diff --git a/src/frontend.c b/src/frontend.c
index c44cd92..8cd9de7 100644
--- a/src/frontend.c
+++ b/src/frontend.c
@@ -500,7 +500,7 @@
 /* set temp integer to the id of the frontend */
 static int
 acl_fetch_fe_id(struct proxy *px, struct session *l4, void *l7, int dir,
-                struct acl_expr *expr, struct sample *smp)
+                const struct arg *args, struct sample *smp)
 {
 	smp->flags = SMP_F_VOL_SESS;
 	smp->type = SMP_T_UINT;
@@ -514,11 +514,11 @@
  */
 static int
 acl_fetch_fe_sess_rate(struct proxy *px, struct session *l4, void *l7, int dir,
-                       struct acl_expr *expr, struct sample *smp)
+                       const struct arg *args, struct sample *smp)
 {
 	smp->flags = SMP_F_VOL_TEST;
 	smp->type = SMP_T_UINT;
-	smp->data.uint = read_freq_ctr(&expr->args->data.prx->fe_sess_per_sec);
+	smp->data.uint = read_freq_ctr(&args->data.prx->fe_sess_per_sec);
 	return 1;
 }
 
@@ -528,11 +528,11 @@
  */
 static int
 acl_fetch_fe_conn(struct proxy *px, struct session *l4, void *l7, int dir,
-		  struct acl_expr *expr, struct sample *smp)
+                  const struct arg *args, struct sample *smp)
 {
 	smp->flags = SMP_F_VOL_TEST;
 	smp->type = SMP_T_UINT;
-	smp->data.uint = expr->args->data.prx->feconn;
+	smp->data.uint = args->data.prx->feconn;
 	return 1;
 }