diff --git a/nixos/doc/manual/man-nixos-rebuild.xml b/nixos/doc/manual/man-nixos-rebuild.xml
index d0ff81c1dbb3..a5ea81bcdab4 100644
--- a/nixos/doc/manual/man-nixos-rebuild.xml
+++ b/nixos/doc/manual/man-nixos-rebuild.xml
@@ -402,10 +402,9 @@
     </term>
     <listitem>
      <para>
-      Equivalent to <option>--no-build-nix</option>
-      <option>--show-trace</option>. This option is useful if you call
-      <command>nixos-rebuild</command> frequently (e.g. if you’re hacking on
-      a NixOS module).
+      Equivalent to <option>--no-build-nix</option>. This option is
+      useful if you call <command>nixos-rebuild</command> frequently
+      (e.g. if you’re hacking on a NixOS module).
      </para>
     </listitem>
    </varlistentry>
diff --git a/pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.sh b/pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.sh
index 087afb5b6a60..02614aea6d0b 100644
--- a/pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.sh
+++ b/pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.sh
@@ -79,7 +79,6 @@ while [ "$#" -gt 0 ]; do
       --fast)
         buildNix=
         fast=1
-        extraBuildFlags+=(--show-trace)
         ;;
       --profile-name|-p)
         if [ -z "$1" ]; then