diff --git a/scripts/nix-build.in b/scripts/nix-build.in
index 5d57692466..07752f144f 100755
--- a/scripts/nix-build.in
+++ b/scripts/nix-build.in
@@ -211,6 +211,7 @@ foreach my $expr (@exprs) {
             'set +e; ' .
             '[ -n "$PS1" ] && PS1="\n\[\033[1;32m\][nix-shell:\w]$\[\033[0m\] "; ' .
             'unset NIX_ENFORCE_PURITY; ' .
+            'unset NIX_INDENT_MAKE; ' .
             'shopt -u nullglob; ' .
             $envCommand);
         $ENV{BASH_ENV} = $rcfile;