diff --git a/scripts/tests/e3/castles.lua b/scripts/tests/e3/castles.lua
index b9cbabe0b..b32f80f5d 100644
--- a/scripts/tests/e3/castles.lua
+++ b/scripts/tests/e3/castles.lua
@@ -50,3 +50,26 @@ function test_build_packice()
     process_orders()
     assert_equal(nil, u.building)
 end
+
+function test_build_castle_stages()
+    local r = region.create(0,0, "plain")
+    local f = faction.create("castle@eressea.de", "human", "de")
+    local u = unit.create(f, r, 1000)
+    local b = building.create(r, "castle")
+
+    u:add_item("stone", 1000)
+
+    u:set_skill("building", 1)
+    u:clear_orders()
+
+    u:add_order("MACHE BURG " .. itoa36(b.id))
+    process_orders()
+    assert_equal(10, b.size)
+    
+    u:set_skill("building", 3)
+    u:clear_orders()
+    
+    u:add_order("MACHE BURG " .. itoa36(b.id))
+    process_orders()
+    assert_equal(250, b.size)
+end