diff --git a/moltbot/install_mac.sh b/moltbot/install_mac.sh
index 93f26ab..9fdb720 100644
--- a/moltbot/install_mac.sh
+++ b/moltbot/install_mac.sh
@@ -348,12 +348,12 @@ setup_launchd() {
         exit 1
     fi
     NODE_BIN=$(command -v node)
-    if [ -n "${NODE_BIN}" ]; then
-        NODE_DIR=$(dirname "${NODE_BIN}")
-        LAUNCH_PATH="${NODE_DIR}:/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
-    else
-        LAUNCH_PATH="/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
+    if [ -z "${NODE_BIN}" ]; then
+        log_error "未找到 node 可执行文件。"
+        exit 1
     fi
+    NODE_DIR=$(dirname "${NODE_BIN}")
+    LAUNCH_PATH="${NODE_DIR}:/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
     cat > "${PLIST_PATH}" <<EOF
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
@@ -363,6 +363,7 @@ setup_launchd() {
   <string>${PLIST_LABEL}</string>
   <key>ProgramArguments</key>
   <array>
+    <string>${NODE_BIN}</string>
     <string>${GATEWAY_BIN}</string>
     <string>gateway</string>
     <string>--verbose</string>