diff --git a/src/Illuminate/Support/Arr.php b/src/Illuminate/Support/Arr.php
index 10a0f26889a7..ebc882dac293 100755
--- a/src/Illuminate/Support/Arr.php
+++ b/src/Illuminate/Support/Arr.php
@@ -58,7 +58,7 @@ public static function collapse($array)
             $results[] = $values;
         }
 
-        return array_merge([], [], ...$results);
+        return array_merge([], ...$results);
     }
 
     /**