diff --git a/src/service/appservice/mod.rs b/src/service/appservice/mod.rs
index 4f25aade..cf68db21 100644
--- a/src/service/appservice/mod.rs
+++ b/src/service/appservice/mod.rs
@@ -143,7 +143,8 @@ impl Service {
 			.registration_info
 			.write()
 			.await
-			.remove(service_name);
+			.remove(service_name)
+			.ok_or_else(|| crate::Error::AdminCommand("Appservice not found"))?;
 
 		self.db.unregister_appservice(service_name)
 	}
diff --git a/src/utils/error.rs b/src/utils/error.rs
index 85fc1e7b..c6397da4 100644
--- a/src/utils/error.rs
+++ b/src/utils/error.rs
@@ -76,6 +76,8 @@ pub enum Error {
 	RedactionError(OwnedServerName, ruma::canonical_json::RedactionError),
 	#[error("{0} in {1}")]
 	InconsistentRoomState(&'static str, ruma::OwnedRoomId),
+	#[error("{0}")]
+	AdminCommand(&'static str),
 }
 
 impl Error {