diff --git a/nl.1 b/nl.1
index 85f07e9..c6e2ed5 100644
--- a/nl.1
+++ b/nl.1
@@ -18,6 +18,7 @@ numbered.  If no file is given, nl reads from stdin.
 .TP
 .BI \-b " mode"
 defines which lines will be numbered:
+.PD 0
 .RS
 .TP
 .B a
@@ -35,6 +36,7 @@ a regular expression as defined in
 .B t
 only non\-empty lines (default).
 .RE
+.PD
 .TP
 .BI \-i " increment"
 defines the increment between numbered lines.