diff --git a/docker-entrypoint.sh b/docker-entrypoint.sh
index c84167ac..f5f7b3d5 100644
--- a/docker-entrypoint.sh
+++ b/docker-entrypoint.sh
@@ -17,7 +17,7 @@ sed -i "s%{API_BASE_PATH}%$API_BASE_PATH%g" /etc/nginx/conf.d/default.conf
 if [ -z "$SERVER_NAME" ]; then
     serverName="server_name localhost;"
     sed -i '4c '"$serverName"'' /etc/nginx/conf.d/default.conf
-    sed -i "s%{SERVER_NAME}%\" \"%g" /etc/nginx/conf.d/default.conf
+    sed -i "s%{SERVER_NAME}%\"0\"%g" /etc/nginx/conf.d/default.conf
 else
     serverName="server_name $SERVER_NAME;"
     sed -i '4c '"$serverName"'' /etc/nginx/conf.d/default.conf
diff --git a/nginx.conf b/nginx.conf
index 19664ffa..c0083c82 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -17,7 +17,7 @@ server {
         set $my_result_code 403;
     }
 
-    if ($my_server_name ~* \s) {
+    if ($my_server_name ~ "0") {
         set $my_result_code 200;
     }