diff --git a/src/nf_modules/g2gtools/main.nf b/src/nf_modules/g2gtools/main.nf
index b50eca41cc426d3a6e6a07cda6533d627cfea41f..d99fbf21b57233a3802cf39288becc7aad31f04e 100644
--- a/src/nf_modules/g2gtools/main.nf
+++ b/src/nf_modules/g2gtools/main.nf
@@ -23,7 +23,7 @@ g2gtools vcf2vci \
   -f ${fasta} \
   ${input_vcf} \
   -s ${file_id} \
-  -o ${file_id}.vci.gz 2> ${file_id}_g2gtools_vcf2vci_report.txt
+  -o ${file_id}.vci 2> ${file_id}_g2gtools_vcf2vci_report.txt
 """
 }