diff --git a/filtres/images_transforme.php b/filtres/images_transforme.php
index 7a2d7011e17421dc64810c7f6ef788ad1060668d..392a7baa1cfc17eb9666f39838decc225ab54f0e 100644
--- a/filtres/images_transforme.php
+++ b/filtres/images_transforme.php
@@ -145,7 +145,6 @@ function image_aplatir($im, $format = 'jpg', $coul = '000000', $qualite = null,
 							}
 
 							if ($transparence){
-								$a = (1-$a)*127;
 								$color = ImageColorAllocateAlpha($im_, $r, $g, $b, $a);
 							}
 							else {