diff --git a/flutter-install.sh b/flutter-install.sh
index 37b311a..cc7164c 100644
--- a/flutter-install.sh
+++ b/flutter-install.sh
@@ -11,7 +11,7 @@ echo export FLUTTER_HOME=/usr/local/flutter>>/etc/profile
 echo export PUB_HOSTED_URL=https://pub.flutter-io.cn>>/etc/profile
 echo export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn>>/etc/profile
 
-echo export PATH=$FLUTTER_HOME:$PATH>>/etc/profile
+echo export PATH=${FLUTTER_HOME}:${PATH}>>/etc/profile
 source /etc/profile
 
 flutter doctor -v