diff --git a/CImage.php b/CImage.php
index dc64329..ce3a4bd 100644
--- a/CImage.php
+++ b/CImage.php
@@ -1398,6 +1398,7 @@ class CImage
         $compress     = $this->compress     ? "_co{$this->compress}"     : null;
         $rotateBefore = $this->rotateBefore ? "_rb{$this->rotateBefore}" : null;
         $rotateAfter  = $this->rotateAfter  ? "_ra{$this->rotateAfter}"  : null;
+        $lossy        = $this->lossy        ? "_l"                       : null;
 
         $saveAs = $this->normalizeFileExtension();
         $saveAs = $saveAs ? "_$saveAs" : null;
@@ -1464,7 +1465,7 @@ class CImage
             . $quality . $filters . $sharpen . $emboss . $blur . $palette
             . $optimize . $compress
             . $scale . $rotateBefore . $rotateAfter . $autoRotate . $bgColor
-            . $convolve . $copyStrat . $saveAs;
+            . $convolve . $copyStrat . $lossy . $saveAs;
 
         return $this->setTarget($file, $base);
     }
diff --git a/README.md b/README.md
index c01b5cc..b52b82c 100644
--- a/README.md
+++ b/README.md
@@ -49,14 +49,14 @@ There are several ways of installing. You either install the whole project which
 
 The [sourcode is available on GitHub](https://github.com/mosbth/cimage). Clone, fork or [download as zip](https://github.com/mosbth/cimage/archive/master.zip). 
 
-**Latest stable version is v0.7.16 released 2016-08-09.**
+**Latest stable version is v0.7.17 released 2016-08-09.**
 
 I prefer cloning like this. Do switch to the latest stable version.
 
 ```bash
 git clone git://github.com/mosbth/cimage.git
 cd cimage
-git checkout v0.7.16
+git checkout v0.7.17
 ```
 
 Make the cache-directory writable by the webserver.
@@ -79,7 +79,7 @@ There are some all-included bundles of `img.php` that can be downloaded and used
 Dowload the version of your choice like this.
 
 ```bash
-wget https://raw.githubusercontent.com/mosbth/cimage/v0.7.16/webroot/imgp.php
+wget https://raw.githubusercontent.com/mosbth/cimage/v0.7.17/webroot/imgp.php
 ```
 
 Open up the file in your editor and edit the array `$config`. Ensure that the paths to the image directory and the cache directory matches your environment, or create an own config-file for the script.
diff --git a/REVISION.md b/REVISION.md
index ee6c4f0..0803356 100644
--- a/REVISION.md
+++ b/REVISION.md
@@ -5,6 +5,12 @@ Revision history
 [![Build Status](https://scrutinizer-ci.com/g/mosbth/cimage/badges/build.png?b=master)](https://scrutinizer-ci.com/g/mosbth/cimage/build-status/master)
 
 
+v0.7.17 (2016-08-09)
+-------------------------------------
+
+* Made `&lossless` part of the generated cache filename.
+
+
 v0.7.16 (2016-08-09)
 -------------------------------------
 
diff --git a/defines.php b/defines.php
index 3cc5c5e..8ce825a 100644
--- a/defines.php
+++ b/defines.php
@@ -1,6 +1,6 @@
 <?php
 // Version of cimage and img.php
-define("CIMAGE_VERSION", "v0.7.16 (2016-08-09)");
+define("CIMAGE_VERSION", "v0.7.17 (2016-08-09)");
 
 // For CRemoteImage
 define("CIMAGE_USER_AGENT", "CImage/" . CIMAGE_VERSION);
diff --git a/webroot/img_config.php b/webroot/img_config.php
index 6da433a..766cbf5 100644
--- a/webroot/img_config.php
+++ b/webroot/img_config.php
@@ -342,7 +342,7 @@ return array(
      */
     /*
     'postprocessing' => array(
-        'png_lossy'       => false,
+        'png_lossy'       => null,
         'png_lossy_cmd'   => '/usr/local/bin/pngquant --force --output',
 
         'png_filter'        => false,