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-rw-r--r--nixos/modules/system/boot/initrd-ssh.nix4
1 files changed, 4 insertions, 0 deletions
diff --git a/nixos/modules/system/boot/initrd-ssh.nix b/nixos/modules/system/boot/initrd-ssh.nix
index a881459bed18..3e2805a8c341 100644
--- a/nixos/modules/system/boot/initrd-ssh.nix
+++ b/nixos/modules/system/boot/initrd-ssh.nix
@@ -85,6 +85,10 @@ in
   };
 
   config = mkIf (config.boot.initrd.network.enable && cfg.enable) {
+    assertions = [ {
+      assertion = cfg.hostRSAKey != null || cfg.hostDSSKey != null || cfg.hostECDSAKey != null;
+      message = "You should specify at least one host key for initrd SSH";
+    } ];
 
     boot.initrd.extraUtilsCommands = ''
       copy_bin_and_libs ${pkgs.dropbear}/bin/dropbear