1 files changed, 1 insertions, 1 deletions
diff --git a/t/spawn.t b/t/spawn.t
index 2e409157..c31c4f19 100644
--- a/t/spawn.t
+++ b/t/spawn.t
@@ -31,7 +31,7 @@ use PublicInbox::Spawn qw(which spawn popen_rd);
          my ($r, $w);
          pipe $r, $w or die "pipe failed: $!";
          my $pid = spawn(['sh', '-c', 'echo $HELLO'],
-                { 'HELLO' => 'world' }, { 1 => fileno($w) });
+                { 'HELLO' => 'world' }, { 1 => $w });
          close $w or die "close pipe[1] failed: $!";
          is(<$r>, "world\n", 'read stdout of spawned from pipe');
          is(waitpid($pid, 0), $pid, 'waitpid succeeds on spawned process');