diff --git a/src/cfgparse.c b/src/cfgparse.c
index c3b29d4d0..2400559d9 100644
--- a/src/cfgparse.c
+++ b/src/cfgparse.c
@@ -8741,7 +8741,7 @@ out_uri_auth_compat:
 			int nbproc;
 
 			nbproc = my_popcountl(curproxy->bind_proc &
-			                      listener->bind_conf->bind_proc &
+			                      (listener->bind_conf->bind_proc ? listener->bind_conf->bind_proc : curproxy->bind_proc) &
 			                      nbits(global.nbproc));
 
 			if (!nbproc) /* no intersection between listener and frontend */