diff --git a/install.sh b/install.sh
index 38613850..6747bba1 100644
--- a/install.sh
+++ b/install.sh
@@ -539,7 +539,7 @@ server {
 
         proxy_http_version 1.1;
         proxy_set_header Upgrade \$http_upgrade;
-        proxy_set_header Connection \"upgrade";
+        proxy_set_header Connection "upgrade";
 
         proxy_redirect     off;
         proxy_set_header   Host \$host;