diff --git a/source/java/org/alfresco/repo/rendition/RenditionServiceIntegrationTest.java b/source/java/org/alfresco/repo/rendition/RenditionServiceIntegrationTest.java
index bd7f63e34f..155d426bfd 100644
--- a/source/java/org/alfresco/repo/rendition/RenditionServiceIntegrationTest.java
+++ b/source/java/org/alfresco/repo/rendition/RenditionServiceIntegrationTest.java
@@ -1707,7 +1707,7 @@ public class RenditionServiceIntegrationTest extends BaseAlfrescoSpringTest
 
         assertEquals(MimetypeMap.MIMETYPE_IMAGE_JPEG, mediumRenditionDef.getParameterValue(AbstractRenderingEngine.PARAM_MIME_TYPE));
         assertEquals(MimetypeMap.MIMETYPE_IMAGE_PNG, doclibRenditionDef.getParameterValue(AbstractRenderingEngine.PARAM_MIME_TYPE));
-        assertEquals(MimetypeMap.MIMETYPE_IMAGE_PNG, imgpreviewRenditionDef.getParameterValue(AbstractRenderingEngine.PARAM_MIME_TYPE));
+        assertEquals(MimetypeMap.MIMETYPE_IMAGE_JPEG, imgpreviewRenditionDef.getParameterValue(AbstractRenderingEngine.PARAM_MIME_TYPE));
         assertEquals(MimetypeMap.MIMETYPE_FLASH, webpreviewRenditionDef.getParameterValue(AbstractRenderingEngine.PARAM_MIME_TYPE));
         assertEquals(MimetypeMap.MIMETYPE_IMAGE_PNG, avatarRenditionDef.getParameterValue(AbstractRenderingEngine.PARAM_MIME_TYPE));
     }