diff --git a/config/alfresco/content-services-context.xml b/config/alfresco/content-services-context.xml
index fbfba3e1b4..13bab27fa4 100644
--- a/config/alfresco/content-services-context.xml
+++ b/config/alfresco/content-services-context.xml
@@ -972,6 +972,10 @@
       </property>
       <property name="explicitTransformations">
          <list>
+            <bean class="org.alfresco.repo.content.transform.ExplictTransformationDetails" >
+                <property name="sourceMimetype"><value>image/png</value></property>
+                <property name="targetMimetype"><value>image/png</value></property>
+            </bean>
             <bean class="org.alfresco.repo.content.transform.ExplictTransformationDetails" >
                 <property name="sourceMimetype"><value>application/pdf</value></property>
                 <property name="targetMimetype"><value>image/png</value></property>