diff --git a/src/models/OptimizedImage.php b/src/models/OptimizedImage.php
index 2d269e0..92e4f4e 100644
--- a/src/models/OptimizedImage.php
+++ b/src/models/OptimizedImage.php
@@ -618,8 +618,7 @@ protected function getSrcsetSubsetArray(array $set, int $width, string $comparis
         if (empty($this->variantSourceWidths)) {
             return $subset;
         }
-        // Sort the arrays by numeric key
-        ksort($set, SORT_NUMERIC);
+        // Sort the source widths by numeric key
         sort($this->variantSourceWidths, SORT_NUMERIC);
         foreach ($this->variantSourceWidths as $variantSourceWidth) {
             $match = false;