diff --git a/src/scripts/default.lua b/src/scripts/default.lua
index 208d5dff4..00d47af5b 100644
--- a/src/scripts/default.lua
+++ b/src/scripts/default.lua
@@ -47,9 +47,11 @@ function write_aliases()
   file = io.open(basepath .. "/aliases", "w")
   for faction in factions() do
     local unit
-    file:write("partei-" .. itoa36(faction.id) .. ": " .. faction.email .. "\n")
-    for unit in faction.units do
-      file:write("einheit-" .. itoa36(unit.id) .. ": " .. faction.email .. "\n")
+    if faction.email ~= "" then
+      file:write("partei-" .. itoa36(faction.id) .. ": " .. faction.email .. "\n")
+      for unit in faction.units do
+        file:write("einheit-" .. itoa36(unit.id) .. ": " .. faction.email .. "\n")
+      end
     end
   end
  
diff --git a/src/scripts/run-tests.lua b/src/scripts/run-tests.lua
index 837a9b494..e46832baf 100644
--- a/src/scripts/run-tests.lua
+++ b/src/scripts/run-tests.lua
@@ -79,7 +79,7 @@ function test_md5()
   read_game("571.dat", "binary")
   -- read_orders("orders.571")
   run_turn()
-  write_game("572.txt", "text")
+--  write_game("572.txt", "text")
 end
 
 loadscript("default.lua")