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-rwxr-xr-xnixos/modules/system/activation/switch-to-configuration.pl2
1 files changed, 1 insertions, 1 deletions
diff --git a/nixos/modules/system/activation/switch-to-configuration.pl b/nixos/modules/system/activation/switch-to-configuration.pl
index 8bd450d7343..95308d5da94 100755
--- a/nixos/modules/system/activation/switch-to-configuration.pl
+++ b/nixos/modules/system/activation/switch-to-configuration.pl
@@ -74,7 +74,7 @@ if ("@localeArchive@" ne "") {
 
 if (!defined($action) || ($action ne "switch" && $action ne "boot" && $action ne "test" && $action ne "dry-activate")) {
     print STDERR <<"EOF";
-Usage: $0 [switch|boot|test]
+Usage: $0 [switch|boot|test|dry-activate]
 
 switch:       make the configuration the boot default and activate now
 boot:         make the configuration the boot default