diff --git a/src/ImageMerge.php b/src/ImageMerge.php
index f83e35d..2dc5d76 100644
--- a/src/ImageMerge.php
+++ b/src/ImageMerge.php
@@ -109,6 +109,7 @@ public function merge($percentage)
 
         $img = imagecreatetruecolor($this->sourceImage->getWidth(), $this->sourceImage->getHeight());
         imagealphablending($img, true);
+        imagesavealpha($img, true);
         $transparent = imagecolorallocatealpha($img, 0, 0, 0, 127);
         imagefill($img, 0, 0, $transparent);