diff --git a/ofborg/src/acl.rs b/ofborg/src/acl.rs
index 3e08a70..aeef24e 100644
--- a/ofborg/src/acl.rs
+++ b/ofborg/src/acl.rs
@@ -2,25 +2,18 @@ use crate::systems::System;
 
 pub struct ACL {
     trusted_users: Vec<String>,
-    known_users: Vec<String>,
     repos: Vec<String>,
 }
 
 impl ACL {
-    pub fn new(
-        repos: Vec<String>,
-        mut trusted_users: Vec<String>,
-        mut known_users: Vec<String>,
-    ) -> ACL {
+    pub fn new(repos: Vec<String>, mut trusted_users: Vec<String>) -> ACL {
         trusted_users
             .iter_mut()
             .map(|x| *x = x.to_lowercase())
             .last();
-        known_users.iter_mut().map(|x| *x = x.to_lowercase()).last();
 
         ACL {
             trusted_users,
-            known_users,
             repos,
         }
     }
@@ -53,14 +46,6 @@ impl ACL {
             .collect()
     }
 
-    pub fn can_build_restricted(&self, user: &str, repo: &str) -> bool {
-        if repo.to_lowercase() != "nixos/nixpkgs" {
-            return false;
-        }
-
-        self.known_users.contains(&user.to_lowercase())
-    }
-
     pub fn can_build_unrestricted(&self, user: &str, repo: &str) -> bool {
         if repo.to_lowercase() == "nixos/nixpkgs" {
             self.trusted_users.contains(&user.to_lowercase())
diff --git a/ofborg/src/config.rs b/ofborg/src/config.rs
index 1f3fc81..f5b4327 100644
--- a/ofborg/src/config.rs
+++ b/ofborg/src/config.rs
@@ -69,7 +69,6 @@ pub struct RunnerConfig {
     pub identity: String,
     pub repos: Option<Vec<String>>,
     pub trusted_users: Option<Vec<String>>,
-    pub known_users: Option<Vec<String>>,
 
     /// If true, will create its own queue attached to the build job
     /// exchange. This means that builders with this enabled will
@@ -100,10 +99,6 @@ impl Config {
                 .trusted_users
                 .clone()
                 .expect("fetching config's runner.trusted_users"),
-            self.runner
-                .known_users
-                .clone()
-                .expect("fetching config's runner.known_users"),
         )
     }
 
diff --git a/ofborg/src/tasks/evaluationfilter.rs b/ofborg/src/tasks/evaluationfilter.rs
index 5a2f10f..23b52a8 100644
--- a/ofborg/src/tasks/evaluationfilter.rs
+++ b/ofborg/src/tasks/evaluationfilter.rs
@@ -107,11 +107,8 @@ mod tests {
         let job: ghevent::PullRequestEvent =
             serde_json::from_str(&data.to_string()).expect("Should properly deserialize");
 
-        let mut worker = EvaluationFilterWorker::new(acl::ACL::new(
-            vec!["nixos/nixpkgs".to_owned()],
-            vec![],
-            vec![],
-        ));
+        let mut worker =
+            EvaluationFilterWorker::new(acl::ACL::new(vec!["nixos/nixpkgs".to_owned()], vec![]));
 
         assert_eq!(
             worker.consumer(&job),