diff --git a/README.md b/README.md
index d14b72f5ac2fd268b589ce40576f581761b70616..700c48079143f840bb6b6f7428bfa092dca879a5 100644
--- a/README.md
+++ b/README.md
@@ -63,9 +63,6 @@ Arguments:
 
   <out_prefix>  the prefix of output files
 
-  <out_vcf> the output vcf aftering phasing blocks in hapfile
-
-
 Options:
   -t --threads <threads>  number of BAM decompression threads [default: 4]
   --barcodeTag <barcodeTag>  the cell barcode tag in BAM [default: CB]