diff --git a/system/Files/File.php b/system/Files/File.php
index 93710e72ffc5..4c1757a6b538 100644
--- a/system/Files/File.php
+++ b/system/Files/File.php
@@ -73,7 +73,6 @@ public function getSize()
     /**
      * Retrieve the file size by unit, calculated in IEC standards with 1024 as base value.
      *
-     * @param FileSizeUnit $unit
      * @phpstan-param positive-int $precision
      * @return false|int|string
      */
@@ -85,7 +84,6 @@ public function getSizeByUnitBinary(FileSizeUnit $unit = FileSizeUnit::B, int $p
     /**
      * Retrieve the file size by unit, calculated in metric standards with 1000 as base value.
      *
-     * @param FileSizeUnit $unit
      * @phpstan-param positive-int $precision
      * @return false|int|string
      */
@@ -222,12 +220,10 @@ public function getDestination(string $destination, string $delimiter = '_', int
     protected function getSizeByUnitInternal(int $fileSizeBase, FileSizeUnit $unit, int $precision)
     {
         $exponent = $unit->value;
-        $divider = $fileSizeBase ** $exponent;
+        $divider  = $fileSizeBase ** $exponent;
+        $size     = $this->getSize() / $divider;
 
-        $size = $this->getSize() / $divider;
-
-        if($unit !== FileSizeUnit::B)
-        {
+        if($unit !== FileSizeUnit::B) {
             $size = number_format($size, $precision);
         }
 
diff --git a/system/Files/FileSizeUnit.php b/system/Files/FileSizeUnit.php
index 8f30eeb00d8f..4098e3a3e2bb 100644
--- a/system/Files/FileSizeUnit.php
+++ b/system/Files/FileSizeUnit.php
@@ -13,11 +13,11 @@
 
 namespace CodeIgniter\Files;
 
-enum FileSizeUnit : int
+enum FileSizeUnit: int
 {
     case B  = 0;
     case KB = 1;
     case MB = 2;
     case GB = 3;
     case TB = 4;
-}
\ No newline at end of file
+}
diff --git a/tests/system/Files/FileTest.php b/tests/system/Files/FileTest.php
index 15ac0d52f4f5..c8a15fce29af 100644
--- a/tests/system/Files/FileTest.php
+++ b/tests/system/Files/FileTest.php
@@ -170,7 +170,7 @@ public function testGetDestination(): void
     }
 
     /**
-     * @return array<string, list<int>>
+     * @return array<string, array<int, CodeIgniter\Files\FileSizeUnit>>
      */
     public static function provideGetSizeData()
     {