diff --git a/nixos/modules/services/networking/radicale.nix b/nixos/modules/services/networking/radicale.nix
index 56f2e976cff..391f4bdebba 100644
--- a/nixos/modules/services/networking/radicale.nix
+++ b/nixos/modules/services/networking/radicale.nix
@@ -9,7 +9,7 @@ let
   confFile = pkgs.writeText "radicale.conf" cfg.config;
 
   # This enables us to default to version 2 while still not breaking configurations of people with version 1
-  defaultPackage = if versionAtLeast "17.09" config.system.stateVersion then {
+  defaultPackage = if versionAtLeast config.system.stateVersion "17.09" then {
     pkg = pkgs.radicale2;
     text = "pkgs.radicale2";
   } else {
diff --git a/nixos/tests/radicale.nix b/nixos/tests/radicale.nix
index 2c888469d0a..f694fc75ef7 100644
--- a/nixos/tests/radicale.nix
+++ b/nixos/tests/radicale.nix
@@ -43,6 +43,7 @@ in
             });
           })
         ];
+        system.stateVersion = "17.03";
       };
       radicale1_export = lib.recursiveUpdate radicale1 {
         services.radicale.extraArgs = [