diff --git a/nixos/doc/manual/installation/installing.xml b/nixos/doc/manual/installation/installing.xml
index 2f118d27b1a5..073f7ca34620 100644
--- a/nixos/doc/manual/installation/installing.xml
+++ b/nixos/doc/manual/installation/installing.xml
@@ -22,7 +22,7 @@
   (with empty password).</para></listitem>
 
   <listitem><para>If you downloaded the graphical ISO image, you can
-  run <command>start display-manager</command> to start KDE. If you
+  run <command>systemctl start display-manager</command> to start KDE. If you
   want to continue on the terminal, you can use
   <command>loadkeys</command> to switch to your preferred keyboard layout.
   (We even provide neo2 via <command>loadkeys de neo</command>!)</para></listitem>
diff --git a/nixos/modules/profiles/installation-device.nix b/nixos/modules/profiles/installation-device.nix
index 669b6975c690..93736ba256b3 100644
--- a/nixos/modules/profiles/installation-device.nix
+++ b/nixos/modules/profiles/installation-device.nix
@@ -42,7 +42,7 @@ with lib;
 
         The "root" account has an empty password.  ${
           optionalString config.services.xserver.enable
-            "Type `start display-manager' to\nstart the graphical user interface."}
+            "Type `systemctl start display-manager' to\nstart the graphical user interface."}
       '';
 
     # Allow sshd to be started manually through "start sshd".