diff --git a/scripts/tests/e2/adamantium.lua b/scripts/tests/e2/adamantium.lua
index 8cb703f33..0def0772f 100644
--- a/scripts/tests/e2/adamantium.lua
+++ b/scripts/tests/e2/adamantium.lua
@@ -49,5 +49,11 @@ function test_adamantium2()
   process_orders()
   assert_equal(1, u1:get_item("adamantium"))
   assert_equal(adamantium - 1, r:get_resource("adamantium"))
+
+  -- mines give +1 to mining. mining 16 should give 2 adamantium
+  u1:set_skill("mining", 15)
+  process_orders()
+  assert_equal(3, u1:get_item("adamantium"))
+  assert_equal(adamantium - 3, r:get_resource("adamantium"))
 end
 
diff --git a/src/economy.c b/src/economy.c
index ce174dd09..971cbe794 100644
--- a/src/economy.c
+++ b/src/economy.c
@@ -923,7 +923,7 @@ static void allocate_resource(unit * u, const resource_type * rtype, int want)
     allocation *al;
     const resource_type *rring;
     int amount, skill, skill_mod = 0;
-    variant save_mod;
+    variant save_mod = frac_make(1, 1);
 
     /* momentan kann man keine ressourcen abbauen, wenn man daf�r
      * Materialverbrauch hat: */
@@ -950,9 +950,15 @@ static void allocate_resource(unit * u, const resource_type * rtype, int want)
             return;
         }
     }
-    else {
-        save_mod.sa[0] = 1;
-        save_mod.sa[1] = 1;
+    if (u->building && u->building->type->modifiers) {
+        building *b = inside_building(u);
+        if (b) {
+            message *msg = get_modifiers(u, b->type->modifiers, &save_mod, &skill_mod);
+            if (msg) {
+                ADDMSG(&u->faction->msgs, msg);
+                return;
+            }
+        }
     }
 
     /* Bergw�chter k�nnen Abbau von Eisen/Laen durch Bewachen verhindern.
diff --git a/src/kernel/building.h b/src/kernel/building.h
index 6d66aa9ab..88fe9bedd 100644
--- a/src/kernel/building.h
+++ b/src/kernel/building.h
@@ -73,6 +73,7 @@ extern "C" {
         void(*age) (struct building *);
         double(*taxes) (const struct building *, int size);
         struct attrib *attribs;
+        struct resource_mod *modifiers;
     } building_type;
 
     extern struct selist *buildingtypes;