lib/PublicInbox/Spawn.pm | 2 +-

diff --git a/lib/PublicInbox/Spawn.pm b/lib/PublicInbox/Spawn.pm
index e2868a559741b2416cdbba9960bf598434577c08..b946a66373b84faedaef1a71d02329a2cf8587fe 100644
--- a/lib/PublicInbox/Spawn.pm
+++ b/lib/PublicInbox/Spawn.pm
@@ -178,7 +178,7 @@ }
 
 sub which ($) {
 	my ($file) = @_;
-	return $file if index($file, '/') == 0;
+	return $file if index($file, '/') >= 0;
 	foreach my $p (split(':', $ENV{PATH})) {
 		$p .= "/$file";
 		return $p if -x $p;