diff --git a/srcpkgs/nix/template b/srcpkgs/nix/template
index 2d5ea5362f6..6b917bc100b 100644
--- a/srcpkgs/nix/template
+++ b/srcpkgs/nix/template
@@ -1,7 +1,7 @@
 # Template file for 'nix'
 pkgname=nix
 version=1.8
-revision=5
+revision=6
 build_style=gnu-configure
 # Use /nix/var as suggested by the official Manual.
 configure_args="--localstatedir=/nix/var"
@@ -15,7 +15,7 @@ conf_files="/etc/nix/nix.conf"
 system_groups="nixbld"
 for f in $(seq 10); do
 	system_accounts+=" nixbld${f}"
-	eval export nixbld\${f}_groups="nixbld"
+	eval export nixbld\${f}_pgroup="nixbld"
 done
 # Create required run-time directories.
 make_dirs="