diff --git a/classes/Autoload.php b/classes/Autoload.php
index 5f832d932..111d6e652 100644
--- a/classes/Autoload.php
+++ b/classes/Autoload.php
@@ -139,14 +139,18 @@ class Autoload
 		else
 		{
 			$filename_tmp = tempnam(dirname($filename), basename($filename.'.'));
-			if($filename_tmp !== FALSE and file_put_contents($filename_tmp, $content, LOCK_EX) !== FALSE)
+			if ($filename_tmp !== false AND file_put_contents($filename_tmp, $content, LOCK_EX) !== false)
 			{
 				@rename($filename_tmp, $filename);
 				@chmod($filename, 0666);
 			}
 			else
+			{
 				// $filename_tmp couldn't be written. $filename should be there anyway (even if outdated), no need to die.
 				error_log('Cannot write temporary file '.$filename_tmp);
+				if ($filename_tmp !== false)
+					unlink($filename_tmp);
+			}
 		}
 		$this->index = $classes;
 	}
@@ -189,4 +193,4 @@ class Autoload
 	{
 		return isset($this->index[$classname]) ? $this->index[$classname] : null;
 	}
-}
+}
\ No newline at end of file