diff --git a/app/Repositories/Bill/BillRepository.php b/app/Repositories/Bill/BillRepository.php
index c537027817..93f774ed34 100644
--- a/app/Repositories/Bill/BillRepository.php
+++ b/app/Repositories/Bill/BillRepository.php
@@ -209,7 +209,7 @@ class BillRepository implements BillRepositoryInterface
     /**
      * @param Bill $bill
      *
-     * @return Carbon
+     * @return \Carbon\Carbon
      */
     public function nextExpectedMatch(Bill $bill)
     {
diff --git a/app/Repositories/Bill/BillRepositoryInterface.php b/app/Repositories/Bill/BillRepositoryInterface.php
index 4f2b509786..f2c32e20a7 100644
--- a/app/Repositories/Bill/BillRepositoryInterface.php
+++ b/app/Repositories/Bill/BillRepositoryInterface.php
@@ -103,7 +103,7 @@ interface BillRepositoryInterface
     /**
      * @param Bill $bill
      *
-     * @return Carbon|null
+     * @return \Carbon\Carbon
      */
     public function nextExpectedMatch(Bill $bill);