diff --git a/lam/docs/manual-sources/howto.xml b/lam/docs/manual-sources/howto.xml
index 06b8214e..e813eb96 100644
--- a/lam/docs/manual-sources/howto.xml
+++ b/lam/docs/manual-sources/howto.xml
@@ -3940,7 +3940,7 @@ Have fun!
 
       <para><inlinemediaobject>
           <imageobject>
-            <imagedata fileref="images/zarafa_logo_integrations_certified_140px.jpg" />
+            <imagedata fileref="images/zarafa_logo_integrations_certified_140px.png" />
           </imageobject>
         </inlinemediaobject></para>
 
diff --git a/lam/docs/manual-sources/images/zarafa_logo_integrations_certified_140px.jpg b/lam/docs/manual-sources/images/zarafa_logo_integrations_certified_140px.jpg
deleted file mode 100644
index 36b8b692..00000000
Binary files a/lam/docs/manual-sources/images/zarafa_logo_integrations_certified_140px.jpg and /dev/null differ
diff --git a/lam/docs/manual-sources/images/zarafa_logo_integrations_certified_140px.png b/lam/docs/manual-sources/images/zarafa_logo_integrations_certified_140px.png
new file mode 100644
index 00000000..bc226fd9
Binary files /dev/null and b/lam/docs/manual-sources/images/zarafa_logo_integrations_certified_140px.png differ