diff --git a/.env b/.env
index 8b394b8..01b7772 100644
--- a/.env
+++ b/.env
@@ -110,7 +110,7 @@ APP_ADD_POST_REMOTE_IP_DENIED=
 
 # Post ID rules (for kevacoin key)
 # do not change to keep external KevaChat nodes compatibility
-APP_ADD_POST_KEY_REGEX=/.{1,255}/
+APP_ADD_POST_KEY_REGEX=/.{1,255}/ui
 
 # Post content rules (for kevacoin value, max length is 3072)
 # do not change to keep external KevaChat nodes compatibility