diff --git a/src/server.ts b/src/server.ts
index 308519d..be49575 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -650,6 +650,7 @@ const server = Bun.serve<SessionData>({
     close(ws) {
       if (ws.data.sessionId) {
         sessionWebSockets.delete(ws.data.sessionId);
+        ansiCarryovers.delete(ws.data.sessionId);
 
         // Persist final state before cleanup
         const state = sessionStates.get(ws.data.sessionId);