diff --git a/krebs/3modules/exim-retiolum.nix b/krebs/3modules/exim-retiolum.nix
index 696c48baf..8b6ac4a4e 100644
--- a/krebs/3modules/exim-retiolum.nix
+++ b/krebs/3modules/exim-retiolum.nix
@@ -32,7 +32,7 @@ let
   };
 
   imp = {
-    services.exim = {
+    krebs.exim = {
       enable = true;
       config =
         # This configuration makes only sense for retiolum-enabled hosts.
diff --git a/krebs/3modules/exim-smarthost.nix b/krebs/3modules/exim-smarthost.nix
index a01ab543b..8d9227039 100644
--- a/krebs/3modules/exim-smarthost.nix
+++ b/krebs/3modules/exim-smarthost.nix
@@ -105,7 +105,7 @@ let
         requires = [ "secret.service" ];
       };
     };
-    services.exim = {
+    krebs.exim = {
       enable = true;
       config = ''
         keep_environment =