diff --git a/src/Illuminate/Support/Collection.php b/src/Illuminate/Support/Collection.php
index cf190aa8a464..22fd2f9dde9c 100644
--- a/src/Illuminate/Support/Collection.php
+++ b/src/Illuminate/Support/Collection.php
@@ -1144,14 +1144,14 @@ public function shuffle($seed = null)
 
         if (is_null($seed)) {
             shuffle($items);
-        } else {
-            srand($seed);
-
-            usort($items, function () {
-                return rand(-1, 1);
-            });
         }
 
+        srand($seed);
+
+        usort($items, function () {
+            return rand(-1, 1);
+        });
+
         return new static($items);
     }
 
@@ -1548,9 +1548,9 @@ public function offsetSet($key, $value)
     {
         if (is_null($key)) {
             $this->items[] = $value;
-        } else {
-            $this->items[$key] = $value;
         }
+
+        $this->items[$key] = $value;
     }
 
     /**