diff --git a/src/lb_chash.c b/src/lb_chash.c
index a35351e96..0bf4e81a2 100644
--- a/src/lb_chash.c
+++ b/src/lb_chash.c
@@ -84,7 +84,7 @@ 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);
+		struct tree_occ *new_nodes = realloc(s->lb_nodes, s->next_eweight * sizeof(*new_nodes));
 
 		if (new_nodes) {
 			unsigned int j;