diff --git a/include/haproxy/listener-t.h b/include/haproxy/listener-t.h
index 90a67b2db..899c84924 100644
--- a/include/haproxy/listener-t.h
+++ b/include/haproxy/listener-t.h
@@ -205,8 +205,6 @@ struct bind_conf {
 	int line;                  /* line where the section appears */
 	__decl_thread(HA_RWLOCK_T sni_lock); /* lock the SNI trees during add/del operations */
 	struct thread_set thread_set; /* entire set of the allowed threads (0=no restriction) */
-	unsigned long bind_thread; /* bitmask of threads allowed on this bind_conf */
-	uint bind_tgroup;          /* thread group ID: 0=global IDs, non-zero=local IDs */
 	struct rx_settings settings; /* all the settings needed for the listening socket */
 };
 
diff --git a/include/haproxy/thread.h b/include/haproxy/thread.h
index 068e6e862..6590706ee 100644
--- a/include/haproxy/thread.h
+++ b/include/haproxy/thread.h
@@ -44,7 +44,7 @@ void ha_tkill(unsigned int thr, int sig);
 void ha_tkillall(int sig);
 void ha_thread_relax(void);
 int thread_map_to_groups();
-int thread_resolve_group_mask(struct thread_set *ts, int defgrp, uint *ogid, ulong *omask, char **err);
+int thread_resolve_group_mask(struct thread_set *ts, int defgrp, char **err);
 int parse_thread_set(const char *arg, struct thread_set *ts, char **err);
 extern int thread_cpus_enabled_at_boot;
 
diff --git a/src/cfgparse.c b/src/cfgparse.c
index 659f2396a..75d0b5664 100644
--- a/src/cfgparse.c
+++ b/src/cfgparse.c
@@ -2954,8 +2954,7 @@ init_proxies_list_stage1:
 
 			/* detect and address thread affinity inconsistencies */
 			err = NULL;
-			if (thread_resolve_group_mask(&bind_conf->thread_set, 1,
-			                              &bind_conf->bind_tgroup, &bind_conf->bind_thread, &err) < 0) {
+			if (thread_resolve_group_mask(&bind_conf->thread_set, (curproxy == global.cli_fe) ? 1 : 0, &err) < 0) {
 				ha_alert("Proxy '%s': %s in 'bind %s' at [%s:%d].\n",
 					   curproxy->id, err, bind_conf->arg, bind_conf->file, bind_conf->line);
 				free(err);
@@ -4436,8 +4435,7 @@ init_proxies_list_stage2:
 					}
 
 					err = NULL;
-					if (thread_resolve_group_mask(&bind_conf->thread_set, (curproxy == global.cli_fe) ? 1 : 0,
-								      &bind_conf->bind_tgroup, &bind_conf->bind_thread, &err) < 0) {
+					if (thread_resolve_group_mask(&bind_conf->thread_set, 1, &err) < 0) {
 						ha_alert("Peers section '%s': %s in 'bind %s' at [%s:%d].\n",
 							 curpeers->peers_fe->id, err, bind_conf->arg, bind_conf->file, bind_conf->line);
 						free(err);
diff --git a/src/thread.c b/src/thread.c
index 75ce24afd..94d150d96 100644
--- a/src/thread.c
+++ b/src/thread.c
@@ -1228,13 +1228,11 @@ int thread_map_to_groups()
  * was completed and the thread group numbers configured. The thread_set is
  * replaced by the resolved group-based one. It is possible to force a single
  * default group for unspecified sets instead of enabling all groups by passing
- * this group's non-zero value to defgrp. The output ogid and omask are set,
- * respectively, to the first non-empty group and its mask. They're used only
- * for the transition to the new model.
+ * this group's non-zero value to defgrp.
  *
  * Returns <0 on failure, >=0 on success.
  */
-int thread_resolve_group_mask(struct thread_set *ts, int defgrp, uint *ogid, ulong *omask, char **err)
+int thread_resolve_group_mask(struct thread_set *ts, int defgrp, char **err)
 {
 	struct thread_set new_ts = { 0 };
 	ulong mask, imask;
@@ -1319,10 +1317,6 @@ int thread_resolve_group_mask(struct thread_set *ts, int defgrp, uint *ogid, ulo
 	}
 
 	*ts = new_ts;
-
-	/* FIXME: for now we still also return the old format */
-	*ogid  = thread_set_first_group(ts);
-	*omask = thread_set_first_tmask(ts);
 	return 0;
 }