diff --git a/lib/Pool.js b/lib/Pool.js
index f60a70e6..284d8ccd 100644
--- a/lib/Pool.js
+++ b/lib/Pool.js
@@ -305,6 +305,13 @@ class Pool extends EventEmitter {
       return
     }
     const minShortfall = this._config.min - this._count
+
+    if(minShortfall == 0){
+      const waiting  = this._waitingClients.size();
+      if(waiting > 0){
+        minShortFall = diff = Math.min(waiting, this._config.max - this._count);
+      }
+    }
     for (let i = 0; i < minShortfall; i++) {
       this._createResource()
     }