diff --git a/src/rustgame/doctor.rs b/src/rustgame/doctor.rs
index 207cfe5..326a8c2 100644
--- a/src/rustgame/doctor.rs
+++ b/src/rustgame/doctor.rs
@@ -314,6 +314,11 @@ fn helper_absence(name: &str) -> String {
              own flags miss anybody already standing in a zone when it is created or restored"
                 .to_string()
         }
+        "RunicGatewayDomes.cs" => {
+            "the bridge still runs and its zones still open, but the site offers no dome over \
+             an event zone, because ZoneDomes cannot be called without it"
+                .to_string()
+        }
         _ => format!("the bridge still runs without {name}; what it helped with falls back"),
     }
 }