diff --git a/minimap2.1 b/minimap2.1
index 1c7171b..4fb09bf 100644
--- a/minimap2.1
+++ b/minimap2.1
@@ -246,6 +246,7 @@ _
 11	int	Number bases, including gaps, in the mapping
 12	int	Mapping quality (0-255 with 255 for missing)
 .TE
+
 .PP
 When alignment is available, column 11 gives the total number of sequence
 matches, mismatches and gaps in the alignment; column 10 divided by column 11
@@ -267,6 +268,7 @@ ms	i	DP score of the max scoring segment in the alignment
 nn	i	Number of ambiguous bases in the alignment
 cg	Z	CIGAR string (only in PAF)
 .TE
+
 .SH SEE ALSO
 .PP
 miniasm(1), minimap(1), bwa(1).