diff --git a/ccw/src/core/routes/hooks-routes.ts b/ccw/src/core/routes/hooks-routes.ts
index a3175bdb..c316c5f9 100644
--- a/ccw/src/core/routes/hooks-routes.ts
+++ b/ccw/src/core/routes/hooks-routes.ts
@@ -31,8 +31,8 @@ const GLOBAL_SETTINGS_PATH = join(homedir(), '.claude', 'settings.json');
  * @returns {string}
  */
 function getProjectSettingsPath(projectPath) {
-  const normalizedPath = projectPath.replace(/\//g, '\\').replace(/^\\([a-zA-Z])\\/, '$1:\\');
-  return join(normalizedPath, '.claude', 'settings.json');
+  // path.join automatically handles cross-platform path separators
+  return join(projectPath, '.claude', 'settings.json');
 }
 
 /**
diff --git a/ccw/src/core/routes/mcp-routes.ts b/ccw/src/core/routes/mcp-routes.ts
index 343cfa0e..b9164ec1 100644
--- a/ccw/src/core/routes/mcp-routes.ts
+++ b/ccw/src/core/routes/mcp-routes.ts
@@ -1000,8 +1000,8 @@ function writeSettingsFile(filePath, settings) {
  * @returns {string}
  */
 function getProjectSettingsPath(projectPath) {
-  const normalizedPath = projectPath.replace(/\//g, '\\').replace(/^\\([a-zA-Z])\\/, '$1:\\');
-  return join(normalizedPath, '.claude', 'settings.json');
+  // path.join automatically handles cross-platform path separators
+  return join(projectPath, '.claude', 'settings.json');
 }
 
 // ========================================