diff --git a/source/src/client.cpp b/source/src/client.cpp
index 3f0ee811..5f89e1a1 100644
--- a/source/src/client.cpp
+++ b/source/src/client.cpp
@@ -208,7 +208,11 @@ void disconnect(int onlyclean, int async)
 #endif
     if(!onlyclean) localconnect();
 
-    if(identexists("onDisconnect")) execute("onDisconnect");
+    if(identexists("onDisconnect"))
+    {
+        defformatstring(ondisconnect)("onDisconnect %d", -1);
+        execute(ondisconnect);
+    }
 }
 
 void trydisconnect()
diff --git a/source/src/clients2c.cpp b/source/src/clients2c.cpp
index 2ee6936b..35694c40 100644
--- a/source/src/clients2c.cpp
+++ b/source/src/clients2c.cpp
@@ -639,6 +639,11 @@ void parsemessages(int cn, playerent *d, ucharbuf &p, bool demo = false)
                 if(!d) break;
                 if(d->name[0]) conoutf(_("player %s disconnected"), colorname(d));
                 zapplayer(players[cn]);
+                if(identexists("onDisconnect"))
+                {
+                    defformatstring(ondisconnect)("onDisconnect %d", d->clientnum);
+                    execute(ondisconnect);
+                }
                 break;
             }