1 files changed, 1 insertions, 1 deletions
diff --git a/src/mum b/src/mum
index 402053e..a31f45d 100755
--- a/src/mum
+++ b/src/mum
@@ -30,7 +30,7 @@ my $d = qr{
           | (?&next)                 (?{ local %ref = (next => $^R) })
           | (?&prev)                 (?{ local %ref = (prev => $^R) })
           )
-          ( ([+-] \d+)               (?{ local %ref = (%ref, plus => $^N) })
+          ( ([+-] \d+)               (?{ local %ref = (%ref, plus => 0+$^N) })
           )?
   )
   (?<grep> g((?&next))               (?{ local %ref = (grep => $^R) })