diff --git a/common/networking.nix b/common/networking.nix
index 5a859e9..d657014 100644
--- a/common/networking.nix
+++ b/common/networking.nix
@@ -10,6 +10,13 @@
   # Allow managing networks without superuser privileges.
   users.users.tinger.extraGroups = [ "networkmanager" ];
 
+  # Apparently if this "wireless regulatory domain" is not set, it defaults to
+  # `00` (the world domain). Which then causes 6 GHz roaming to fail, dropping
+  # the wifi connection periodically.
+  boot.extraModprobeConfig = ''
+    options cfg80211 ieee80211_regdom=DE
+  '';
+
   environment.systemPackages = with pkgs; [
     networkmanagerapplet # Session secret agent for network manager
   ];