Index: make_captcha_img.php
===================================================================
--- make_captcha_img.php	(revision 5752)
+++ make_captcha_img.php	(working copy)
@@ -249,7 +249,7 @@
 					$x += (int)($size + ($this->minsize / 5));
 				}
 				header('Content-type: image/jpeg');
-				@ImageJPEG($image, '', $this->jpegquality);
+				@ImageJPEG($image, NULL, $this->jpegquality);
 				@ImageDestroy($image);
 				if($this->debug) echo "\n<br />-Captcha-Debug: Destroy Imagestream.";
 			}