diff --git a/nixos/modules/system/boot/systemd.nix b/nixos/modules/system/boot/systemd.nix
index cbf9e7b49d3..6b672c7b2eb 100644
--- a/nixos/modules/system/boot/systemd.nix
+++ b/nixos/modules/system/boot/systemd.nix
@@ -263,7 +263,7 @@ let
         }
         (mkIf (config.preStart != "")
           { serviceConfig.ExecStartPre =
-              makeJobScript "${name}-pre-start" config.preStart;
+              [ (makeJobScript "${name}-pre-start" config.preStart) ];
           })
         (mkIf (config.script != "")
           { serviceConfig.ExecStart =
@@ -271,7 +271,7 @@ let
           })
         (mkIf (config.postStart != "")
           { serviceConfig.ExecStartPost =
-              makeJobScript "${name}-post-start" config.postStart;
+              [ (makeJobScript "${name}-post-start" config.postStart) ];
           })
         (mkIf (config.reload != "")
           { serviceConfig.ExecReload =