diff --git a/src/util/util/ipc/listener/UnixSocketListener.ts b/src/util/util/ipc/listener/UnixSocketListener.ts
index 03f58ab78..50ffe2b09 100644
--- a/src/util/util/ipc/listener/UnixSocketListener.ts
+++ b/src/util/util/ipc/listener/UnixSocketListener.ts
@@ -100,7 +100,7 @@ export class UnixSocketListener extends BaseEventListener {
             });
             socket.on("close", () => {
                 console.log("[UnixSocketListener] Unix socket client disconnected");
-                this.openConnectionsMetric.set(this.server.connections);
+                this.openConnectionsMetric.set(this.server.connections ?? 0);
             });
         });