diff --git a/src/resizer/distributors.js b/src/resizer/distributors.js
index a4dfd9b871..a81925a763 100644
--- a/src/resizer/distributors.js
+++ b/src/resizer/distributors.js
@@ -27,7 +27,7 @@ class FixedDistributor {
         this.sizer = sizer;
         this.item = item;
         this.beforeOffset = sizer.getItemOffset(this.item);
-        this.onResized = config.onResized;
+        this.onResized = config && config.onResized;
     }
 
     resize(offset) {