diff --git a/README.org b/README.org
index c50ed2f..9ab9890 100644
--- a/README.org
+++ b/README.org
@@ -701,6 +701,9 @@ This section is very much a work in progress. I have struggled to get this devic
     '';
   };
 
+  # FIXME: Import hardware overlay.
+  services.xserver.videoDrivers = [ "fbdev"];
+
   sound.enable = true;
   hardware.pulseaudio.enable = true;
   hardware.enableRedistributableFirmware = true;
@@ -899,7 +902,7 @@ Apply some configuration to the default settings:
 {
   services.openssh = {
     enable = true;
-    permitRootLogin = false;
+    permitRootLogin = "no";
     passwordAuthentication = false;
   };
 }
diff --git a/hosts/raspberry/hardware.nix b/hosts/raspberry/hardware.nix
index 28a7f1b..8f69a87 100644
--- a/hosts/raspberry/hardware.nix
+++ b/hosts/raspberry/hardware.nix
@@ -27,6 +27,9 @@
     '';
   };
 
+  # FIXME: Import hardware overlay.
+  services.xserver.videoDrivers = [ "fbdev"];
+
   sound.enable = true;
   hardware.pulseaudio.enable = true;
   hardware.enableRedistributableFirmware = true;
diff --git a/modules/ssh.nix b/modules/ssh.nix
index c232828..a22e871 100644
--- a/modules/ssh.nix
+++ b/modules/ssh.nix
@@ -4,7 +4,7 @@
 {
   services.openssh = {
     enable = true;
-    permitRootLogin = false;
+    permitRootLogin = "no";
     passwordAuthentication = false;
   };
 }