diff --git a/streaming-agent/signaling-server.js b/streaming-agent/signaling-server.js
index 7d5996f..8ea6ffc 100644
--- a/streaming-agent/signaling-server.js
+++ b/streaming-agent/signaling-server.js
@@ -292,7 +292,7 @@ function performCssRestart(reason) {
         // has always found xdotool fine. Explicitly ensure common binary
         // paths are present here too, since this exact command was
         // silently failing with "xdotool: not found" every time.
-        execSync(`docker exec ${CONTAINER} bash -c "export PATH=\$PATH:/usr/bin:/usr/local/bin:/bin; DISPLAY=:99 WIN=\$(xdotool search --name '' | head -1) && xdotool windowfocus --sync \$WIN" || true`);
+        execSync(`docker exec ${CONTAINER} bash -c "export PATH=\\$PATH:/usr/bin:/usr/local/bin:/bin; DISPLAY=:99 WIN=\\$(xdotool search --name '' | head -1) && xdotool windowfocus --sync \\$WIN" || true`);
         console.log('[sig] CSS restart: focused new window');
       } catch (e) {
         console.error('[sig] CSS restart: failed to focus new window:', e.message);