diff -r 6a8c294f49c9 -r 1e45db229f9f rust/hedgewars-server/src/handlers/inroom.rs
--- a/rust/hedgewars-server/src/handlers/inroom.rs	Mon Jun 03 23:15:05 2019 +0300
+++ b/rust/hedgewars-server/src/handlers/inroom.rs	Mon Jun 03 23:50:26 2019 +0300
@@ -159,7 +159,7 @@
         }
         Greeting(text) => {
             if client.is_admin() || client.is_master() && !room.is_fixed() {
-                room.greeting = text;
+                room.greeting = text.unwrap_or(String::new());
             }
         }
         MaxTeams(count) => {