diff --git a/source/test-java/org/alfresco/repo/rendition/RenditionServicePermissionsTest.java b/source/test-java/org/alfresco/repo/rendition/RenditionServicePermissionsTest.java
index 793463fbe7..041ae3aa0f 100644
--- a/source/test-java/org/alfresco/repo/rendition/RenditionServicePermissionsTest.java
+++ b/source/test-java/org/alfresco/repo/rendition/RenditionServicePermissionsTest.java
@@ -465,7 +465,7 @@ public class RenditionServicePermissionsTest
      */
     private static class MockUserCheckingContentTransformer implements ContentTransformer
     {
-        public static final String SUPPORTED_TARGET_MIMETYPE = "dummy/dummy";
+        public static final String SUPPORTED_TARGET_MIMETYPE = "image/dummy";
         public static final String TEST_TARGET_CONTENT = "transformed text";
         
         private String expectedUsername;