diff --git a/scripts/install b/scripts/install
index 06f5130..eeee9f6 100755
--- a/scripts/install
+++ b/scripts/install
@@ -94,4 +94,4 @@ nginx_conf="../conf/nginx.conf"
 sudo sed -i "s@YNH_EXAMPLE_PORT@$port@" $nginx_conf
 sudo sed -i "s@YNH_EXAMPLE_DOMAIN@$domain@" $nginx_conf
 sudo cp $nginx_conf /etc/nginx/conf.d/$domain.d/$app.conf
-sudo service nginx reload
+sudo nginx -t && sudo service nginx reload
diff --git a/scripts/upgrade b/scripts/upgrade
index 559aa0b..6d8f2a3 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -53,4 +53,4 @@ nginx_conf="../conf/nginx.conf"
 sudo sed -i "s@YNH_EXAMPLE_PORT@$port@" $nginx_conf
 sudo sed -i "s@YNH_EXAMPLE_DOMAIN@$domain@" $nginx_conf
 sudo cp $nginx_conf /etc/nginx/conf.d/$domain.d/$app.conf
-sudo service nginx reload
+sudo nginx -t && sudo service nginx reload