diff --git a/bwa.1 b/bwa.1
index d30ac33..eefb235 100644
--- a/bwa.1
+++ b/bwa.1
@@ -154,8 +154,8 @@ batch of reads.
 
 The BWA-MEM algorithm performs local alignment. It may produce multiple primary
 alignments for different part of a query sequence. This is a crucial feature
-for long sequences. However, some tools such as Picard's markDuplicates does
-not work with split alignments. One may consider to use option
+for long sequences. However, some tools may not work with split alignments. 
+One may consider to use option
 .B -M
 to flag shorter split hits as secondary.