diff --git a/src/Drivers/Gd/Color.php b/src/Drivers/Gd/Color.php
index 46904b37..d4cde720 100644
--- a/src/Drivers/Gd/Color.php
+++ b/src/Drivers/Gd/Color.php
@@ -34,7 +34,7 @@ class Color extends AbstractColor implements ColorInterface
 
     public function toArray(): array
     {
-        $a = ($this->value >> 24) & 0xFF;
+        $a = ($this->value >> 24) & 0x7F;
         $r = ($this->value >> 16) & 0xFF;
         $g = ($this->value >> 8) & 0xFF;
         $b = $this->value & 0xFF;