diff --git a/source/java/org/alfresco/repo/web/scripts/publishing/ChannelTypeIconGetWebScript.java b/source/java/org/alfresco/repo/web/scripts/publishing/ChannelTypeIconGetWebScript.java
index 5113b60e5f..3493a5a19c 100644
--- a/source/java/org/alfresco/repo/web/scripts/publishing/ChannelTypeIconGetWebScript.java
+++ b/source/java/org/alfresco/repo/web/scripts/publishing/ChannelTypeIconGetWebScript.java
@@ -88,7 +88,7 @@ public class ChannelTypeIconGetWebScript extends AbstractWebScript
         String ext = MimetypeMap.EXTENSION_BINARY;
         if (lastDot != -1 && lastDot < (filename.length()-1))
         {
-            ext = filename.substring(lastDot);
+            ext = filename.substring(lastDot + 1);
         }
         String mimeType = mimetypeService.getMimetype(ext);
         res.setContentType(mimeType);