diff --git a/extensions/remote-control/tmux/manager.ts b/extensions/remote-control/tmux/manager.ts
index 9f27931..b78d9a4 100644
--- a/extensions/remote-control/tmux/manager.ts
+++ b/extensions/remote-control/tmux/manager.ts
@@ -58,7 +58,7 @@ export async function spawnSession(opts: {
   command?: string;
 }): Promise<string> {
   await checkTmuxVersion();
-  const { name, width = 120, height = 40, command = "" } = opts;
+  const { name, width = 80, height = 24, command = "" } = opts;
 
   // Set default-terminal globally so programs inside tmux get xterm-256color
   // and emit the escape sequences that SwiftTerm / xterm-compatible clients expect.