diff --git a/fdroidserver/metadata.py b/fdroidserver/metadata.py
index aa715176..c2d7dcb0 100644
--- a/fdroidserver/metadata.py
+++ b/fdroidserver/metadata.py
@@ -496,7 +496,7 @@ def read_metadata(xref=True):
         # errors are caught early rather than when they hit the build server.
         def linkres(appid):
             if appid in apps:
-                return ("fdroid:app" + appid, "Dummy name - don't know yet")
+                return ("fdroid.app:" + appid, "Dummy name - don't know yet")
             raise MetaDataException("Cannot resolve app id " + appid)
 
         for appid, app in apps.iteritems():
diff --git a/fdroidserver/update.py b/fdroidserver/update.py
index 859f4ae3..1b4f7589 100644
--- a/fdroidserver/update.py
+++ b/fdroidserver/update.py
@@ -716,7 +716,7 @@ def make_index(apps, sortedids, apks, repodir, archive, categories):
 
         def linkres(appid):
             if appid in apps:
-                return ("fdroid:app" + appid, apps[appid]['Name'])
+                return ("fdroid.app:" + appid, apps[appid]['Name'])
             raise MetaDataException("Cannot resolve app id " + appid)
 
         addElement('desc',