diff --git a/systems/x86_64-darwin/mpro/default.nix b/systems/x86_64-darwin/mpro/default.nix
index 76d034b..a783582 100644
--- a/systems/x86_64-darwin/mpro/default.nix
+++ b/systems/x86_64-darwin/mpro/default.nix
@@ -12,5 +12,7 @@ with lib.metacfg;
     "/usr/local/Homebrew/bin"
   ];
 
+  users.users.harald.shell = pkgs.fish;
+
   system.stateVersion = 4;
 }