diff --git a/nixos-configurations/laptop/default.nix b/nixos-configurations/laptop/default.nix
index 714f3bf..23cd0b7 100644
--- a/nixos-configurations/laptop/default.nix
+++ b/nixos-configurations/laptop/default.nix
@@ -12,4 +12,12 @@
     services.xserver.libinput.enable = true;
 
     boot.extraModulePackages = [ config.boot.kernelPackages.broadcom_sta ];
+
+    home-manager.users.thiloho = { pkgs, ... }: {
+      programs.git = {
+        signing = {
+          key = "86C465C22C8A4D56";
+        };
+      };
+    };
 }
diff --git a/nixos-configurations/pc/default.nix b/nixos-configurations/pc/default.nix
index 35e9aba..445cc1e 100644
--- a/nixos-configurations/pc/default.nix
+++ b/nixos-configurations/pc/default.nix
@@ -10,5 +10,13 @@
     services.xserver.windowManager.i3.extraSessionCommands = "xrandr --output DP-0 --left-of DP-4 --mode 1920x1080 --rate 144 --output DP-4 --mode 1920x1080 --rate 144";
 
     networking.hostName = "pc";
+
+    home-manager.users.thiloho = { pkgs, ... }: {
+      programs.git = {
+        signing = {
+          key = "29791D54E85BEE9E";
+        };
+      };
+    };
 }
 
diff --git a/nixos-configurations/shared.nix b/nixos-configurations/shared.nix
index 65c799b..287337f 100644
--- a/nixos-configurations/shared.nix
+++ b/nixos-configurations/shared.nix
@@ -90,7 +90,6 @@
         userName = "thiloho";
         userEmail = "123883702+thiloho@users.noreply.github.com";
         signing = {
-          key = "29791D54E85BEE9E";
           signByDefault = true;
         };
       };