diff --git a/GIFEncoder.class.php b/GIFEncoder.class.php
index 7cac97c..0b4b772 100755
--- a/GIFEncoder.class.php
+++ b/GIFEncoder.class.php
@@ -264,8 +264,8 @@ function getAnimation() {
 function display() {
 //late footer add
 $this->addFooter();
-header('Content-type:image/jpg');
+header('Content-type:image/gif');
 echo $this->image;
 }
  
-}
\ No newline at end of file
+}