diff --git a/modules/services/autossh.nix b/modules/services/autossh.nix
index e42d73f..c38b25e 100644
--- a/modules/services/autossh.nix
+++ b/modules/services/autossh.nix
@@ -78,7 +78,7 @@ in
   config = mkIf (cfg.sessions != []) {
 
     launchd.daemons =
-      lib.fold ( s : acc : acc //
+      lib.foldr ( s : acc : acc //
         {
           "autossh-${s.name}" =
             let
diff --git a/modules/system/default.nix b/modules/system/default.nix
index c484e38..4592d92 100644
--- a/modules/system/default.nix
+++ b/modules/system/default.nix
@@ -11,7 +11,7 @@ let
   failedAssertions = map (x: x.message) (filter (x: !x.assertion) config.assertions);
 
   throwAssertions = res: if (failedAssertions != []) then throw "\nFailed assertions:\n${concatStringsSep "\n" (map (x: "- ${x}") failedAssertions)}" else res;
-  showWarnings = res: fold (w: x: builtins.trace "warning: ${w}" x) res config.warnings;
+  showWarnings = res: foldr (w: x: builtins.trace "warning: ${w}" x) res config.warnings;
 
 in