diff --git a/documentation/glptexviewer.rst b/documentation/glptexviewer.rst
index 9b1159a9c3..0821cb347f 100644
--- a/documentation/glptexviewer.rst
+++ b/documentation/glptexviewer.rst
@@ -51,10 +51,10 @@ DESCRIPTION
 with color, displacement, occlusion and specular ptex maps. Multiple controls 
 are available to experiment with the algorithms.
 
-.. image:: images/barb_1.jpg
+.. image:: images/barb_1.png
    :width: 400px
    :align: center
-   :target: images/barb_1.jpg
+   :target: images/barb_1.png
 
 OPTIONS
 =======
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