diff --git a/src/Illuminate/Collections/Collection.php b/src/Illuminate/Collections/Collection.php
index 71b432cef89c..9b95b18f949d 100644
--- a/src/Illuminate/Collections/Collection.php
+++ b/src/Illuminate/Collections/Collection.php
@@ -148,6 +148,10 @@ public function collapse()
      */
     public function collapseWithKeys()
     {
+        if (! $this->items) {
+            return new static;
+        }
+
         $results = [];
 
         foreach ($this->items as $key => $values) {