diff --git a/pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.8 b/pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.8
index a66f27892a1a..bd219998593c 100644
--- a/pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.8
+++ b/pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.8
@@ -500,7 +500,7 @@ Builder options:
 .Fl K Ns ,
 .Fl -fallback Ns ,
 .Fl I Ns ,
-.Fl -option Ns
+.Fl -option Ns ,
 .Fl -repair Ns ,
 .Fl -builders Ns ,
 .Fl -accept-flake-config Ns ,