diff --git a/README.md b/README.md
index 7a69864a7956665bf6a651d874d44ac4af9fe610..430300e4154ba5b1b1e1f5eba25e8a3e8d09c402 100644
--- a/README.md
+++ b/README.md
@@ -53,14 +53,12 @@ Arguments:
 
   <BAM> the read alignment file with records of single-cell DNA reads
 
-  <VCF> the variant call file with records of SNPs
+  <VCF> the variant call file with records of SNPs with hetSNPs phased in the form of REF/ALT or the GT field
 
   <barcodeFile> the text file containing the list of cell barcodes
 
   <out_prefix>  the prefix of output files
 
-  <fmf> the fragment file from running sgcocaller fmf
-
   <out_vcf> the output vcf aftering phasing blocks in hapfile