diff --git a/extra-systemdboot.nix b/extra-systemdboot.nix
index bba3159..afafb28 100644
--- a/extra-systemdboot.nix
+++ b/extra-systemdboot.nix
@@ -2,7 +2,7 @@
 {
 ##### systemd boot use bigger console text #####
 
-boot.loader.systemd-boot.consoleMode = max;
+boot.loader.systemd-boot.consoleMode = "max";
 
 # The resolution of the console. The following values are valid:
 #     "0": Standard UEFI 80x25 mode