diff --git a/packages/opencode/src/cli/cmd/tui/util/clipboard.ts b/packages/opencode/src/cli/cmd/tui/util/clipboard.ts
index 1a8197bf4e81..0d56f3cf1879 100644
--- a/packages/opencode/src/cli/cmd/tui/util/clipboard.ts
+++ b/packages/opencode/src/cli/cmd/tui/util/clipboard.ts
@@ -16,9 +16,7 @@ function writeOsc52(text: string): void {
   if (!process.stdout.isTTY) return
   const base64 = Buffer.from(text).toString("base64")
   const osc52 = `\x1b]52;c;${base64}\x07`
-  const passthrough = process.env["TMUX"] || process.env["STY"]
-  const sequence = passthrough ? `\x1bPtmux;\x1b${osc52}\x1b\\` : osc52
-  process.stdout.write(sequence)
+  process.stdout.write(osc52)
 }
 
 export namespace Clipboard {