diff --git a/knots/resource-pool.scm b/knots/resource-pool.scm
index 3638500..73f7083 100644
--- a/knots/resource-pool.scm
+++ b/knots/resource-pool.scm
@@ -750,7 +750,7 @@
                  (match waiter
                    (#f
                     (loop (1+ next-resource-id)
-                          (cons resource-details available)
+                          (cons next-resource-id available)
                           waiters))
                    ((reply . timeout)
                     (if (and timeout