diff --git a/modules/installer/tools/nixos-install.sh b/modules/installer/tools/nixos-install.sh
index 428fdbb9c86f..21afeafce1fc 100644
--- a/modules/installer/tools/nixos-install.sh
+++ b/modules/installer/tools/nixos-install.sh
@@ -95,6 +95,8 @@ done
 
 # We don't have locale-archive in the chroot, so clear $LANG.
 export LANG=
+export LC_ALL=
+export LC_TIME=
 
 
 # Register the paths in the Nix closure as valid.  This is necessary