diff --git a/src/lb_chash.c b/src/lb_chash.c
index 0bf4e81a2..23448df80 100644
--- a/src/lb_chash.c
+++ b/src/lb_chash.c
@@ -84,8 +84,13 @@ static inline void chash_queue_dequeue_srv(struct server *s)
 	 * increased the weight beyond the original weight
 	 */
 	if (s->lb_nodes_tot < s->next_eweight) {
-		struct tree_occ *new_nodes = realloc(s->lb_nodes, s->next_eweight * sizeof(*new_nodes));
+		struct tree_occ *new_nodes;
 
+		/* First we need to remove all server's entries from its tree
+		 * because the realloc will change all nodes pointers */
+		chash_dequeue_srv(s);
+
+		new_nodes = realloc(s->lb_nodes, s->next_eweight * sizeof(*new_nodes));
 		if (new_nodes) {
 			unsigned int j;
 
@@ -494,7 +499,6 @@ void chash_init_server_tree(struct proxy *p)
 		srv->lb_nodes_tot = srv->uweight * BE_WEIGHT_SCALE;
 		srv->lb_nodes_now = 0;
 		srv->lb_nodes = calloc(srv->lb_nodes_tot, sizeof(struct tree_occ));
-
 		for (node = 0; node < srv->lb_nodes_tot; node++) {
 			srv->lb_nodes[node].server = srv;
 			srv->lb_nodes[node].node.key = full_hash(srv->puid * SRV_EWGHT_RANGE + node);