diff --git a/hosts/sydpc/configuration.nix b/hosts/sydpc/configuration.nix
index 3de2b85..bed0afd 100644
--- a/hosts/sydpc/configuration.nix
+++ b/hosts/sydpc/configuration.nix
@@ -58,12 +58,19 @@
 
   # Disable systemd-sleep.  Let KDE or whatever dim the screen without
   # suspending the computer.
-  systemd.sleep.extraConfig = ''
-    AllowSuspend=no
-    AllowHibernation=no
-    AllowHybridSleep=no
-    AllowSuspendThenHibernate=no
-  '';
+  # systemd.sleep.extraConfig = ''
+  #   AllowSuspend=no
+  #   AllowHibernation=no
+  #   AllowHybridSleep=no
+  #   AllowSuspendThenHibernate=no
+  # '';
+
+  # Make pressing the power button suspend the system.
+  services.logind = {
+    extraConfig = ''
+      HandlePowerKey=suspend
+    '';
+  };
 
   boot.loader = {
     grub.enable = false;