diff --git a/src/Collection/RecordCollection.php b/src/Collection/RecordCollection.php
index 109f6d0..64d451e 100644
--- a/src/Collection/RecordCollection.php
+++ b/src/Collection/RecordCollection.php
@@ -43,7 +43,7 @@ public function getPreviousCollection(): ?self
         return $this->previousCollection;
     }
 
-    public function findFirstCollection(): ?self
+    public function findFirstCollection(): self
     {
         do {
             $previous = $nextPrevious ?? $this->getPreviousCollection();