diff --git a/deployment/bare_metal/nginx/common/protect.conf b/deployment/bare_metal/nginx/common/protect.conf
index 334aec28f..6ad33bd8e 100644
--- a/deployment/bare_metal/nginx/common/protect.conf
+++ b/deployment/bare_metal/nginx/common/protect.conf
@@ -40,7 +40,7 @@ location ~* "(https?|ftp|php):/" {
 location ~* "(=\\\'|=\\%27|/\\\'/?)\." {
     deny all;
 }
-location ~ "(\{0\}|\(/\(|\.\.\.|\+\+\+|\\\\"\\\\")" {
+location ~ "(\{0\}|\(/\(|\.\.\.|\+\+\+|\\\"\\\")" {
     deny all;
 }
 location ~ "(~|`|<|>|:|;|%|\\|\s|\{|\}|\[|\]|\|)" {