diff --git a/src/proto_http.c b/src/proto_http.c
index 29b1b68..8ccbc2b 100644
--- a/src/proto_http.c
+++ b/src/proto_http.c
@@ -8364,7 +8364,7 @@
 	s->target = NULL;
 	/* re-init store persistence */
 	s->store_count = 0;
-	s->uniq_id = global.req_count++;
+	s->uniq_id = HA_ATOMIC_XADD(&global.req_count, 1);
 
 	s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */