diff --git a/apps/emqx_authz/i18n/emqx_authz_schema_i18n.conf b/apps/emqx_authz/i18n/emqx_authz_schema_i18n.conf
index c3c924230..e83169978 100644
--- a/apps/emqx_authz/i18n/emqx_authz_schema_i18n.conf
+++ b/apps/emqx_authz/i18n/emqx_authz_schema_i18n.conf
@@ -97,7 +97,7 @@ It is NOT allowed to configure two or more sources of the same type.
 Path to the file which contains the ACL rules.
 If the file provisioned before starting EMQX node,
 it can be placed anywhere as long as EMQX has read access to it.
-That is, EMQX will treat it as readonly.
+That is, EMQX will treat it as read only.
 
 In case the rule-set is created or updated from EMQX Dashboard or HTTP API,
 a new file will be created and placed in `authz` subdirectory inside EMQX's `data_dir`,