diff --git a/gui/html/chronoshare-helpers.js b/gui/html/chronoshare-helpers.js
index 60702a8..b13c767 100644
--- a/gui/html/chronoshare-helpers.js
+++ b/gui/html/chronoshare-helpers.js
@@ -73,16 +73,16 @@
     extension = fileName.substr (extStart+1);
     // return imgFullPath (extension);
     if ($.inArray(extension, knownExtensions) >= 0) {
-    	return imgFullPath (extension);
+    	return extension;
     }
     else {
-    	return imgFullPath (defaultExtension);
+    	return defaultExtension;
     }
 };
 
 
 openHistoryForItem = function (fileName) {
-    url = new HistoryClosure (null).base_url ("fileHistory")
+    url = new HistoryClosure (null).base_no_item_url ("fileHistory")
     url += "&item=" + encodeURIComponent (encodeURIComponent (fileName));
     document.location = url;
 };