diff --git a/bin/patch b/bin/patch
index 25e22c0b..31acf56c 100755
--- a/bin/patch
+++ b/bin/patch
@@ -247,7 +247,7 @@ if (ref $patch eq 'Patch') {
 }
 
 $patch->note("done\n");
-exit $patch->error ? 1 : 0;
+exit($patch->error ? 1 : 0);
 
 END {
     close STDOUT || die "$0: can't close stdout: $!\n";