diff --git a/crates/caldav/src/calendar/resource.rs b/crates/caldav/src/calendar/resource.rs
index cf7733d..66fcc67 100644
--- a/crates/caldav/src/calendar/resource.rs
+++ b/crates/caldav/src/calendar/resource.rs
@@ -259,7 +259,7 @@ impl Resource for CalendarResource {
     }
 
     fn get_user_privileges(&self, user: &User) -> Result<UserPrivilegeSet, Self::Error> {
-        if self.cal.subscription_url.is_some() {
+        if self.cal.subscription_url.is_some() || self.read_only {
             return Ok(UserPrivilegeSet::read_only());
         }