diff --git a/plugins/talks/talks.py b/plugins/talks/talks.py
index 7bcb85d..d7be198 100644
--- a/plugins/talks/talks.py
+++ b/plugins/talks/talks.py
@@ -100,6 +100,10 @@ def get_global_data():
         data["startdate"] = datetime.datetime.now()
     if "rooms" not in data:
         data["rooms"] = {}
+    if "names" not in data["rooms"]:
+        data["rooms"]["names"] = {}
+    if "order" not in data["rooms"]:
+        data["rooms"]["order"] = []
     return data
 
 
@@ -169,8 +173,8 @@ def get_talk_data(talkname):
         if "room" not in data:
             logging.warn("Talk <{}> has no `room` field".format(talkname))
         else:
-            if data["room"] in get_global_data()["rooms"]:
-                data["room"] = get_global_data()["rooms"][data["room"]]
+            if data["room"] in get_global_data()["rooms"]["names"]:
+                data["room"] = get_global_data()["rooms"]["names"][data["room"]]
         if "time" not in data or "day" not in data:
             logging.warn("Talk <{}> has no `time` or `day`".format(talkname))
             if "time" in data:
@@ -371,8 +375,22 @@ class TalkGridDirective(Directive):
                             rooms.add(r)
                     else:
                         rooms.add(t["room"])
-                # TODO: ordina in base a qualcosa nel meta.yaml globale
-                rooms = list(sorted(rooms))
+
+                def _room_sort_key(r):
+                    order = get_global_data()["rooms"]["order"]
+                    base = None
+                    for k, v in get_global_data()["rooms"]["names"].items():
+                        if v == r:
+                            base = k
+                            break
+                    else:
+                        if type(r) is str:
+                            return ord(r[0])
+                        # int?
+                        return r
+                    return order.index(base)
+
+                rooms = list(sorted(rooms, key=_room_sort_key))
 
                 # room=* is not a real room.
                 # Remove it unless that day only has special rooms
diff --git a/talks/meta.yaml b/talks/meta.yaml
index 5ca8453..ab75d08 100644
--- a/talks/meta.yaml
+++ b/talks/meta.yaml
@@ -1,6 +1,8 @@
 startdate: 2019-05-30
 rooms:
-    A: Bistrot
-    B: Sala Biliardo (grande)
-    C: Hangar
-    D: Sala concerti
+    names:
+        A: Bistrot
+        B: Sala Biliardo (grande)
+        C: Hangar
+        D: Sala concerti
+    order: [A,B,C,D]