diff --git a/src/nf_modules/gatk4/main.nf b/src/nf_modules/gatk4/main.nf
index add285f50e89335ad5e7867147555295b85a1109..ef296cb8953cca537c8189aec0c409e8eff7c2df 100644
--- a/src/nf_modules/gatk4/main.nf
+++ b/src/nf_modules/gatk4/main.nf
@@ -176,7 +176,6 @@ gatk --java-options "-Xmx${xmx_memory}G" HaplotypeCaller \
   -R ${fasta} \
   -I ${bam} \
   -ERC GVCF \
-  -variant_index_type LINEAR -variant_index_parameter 128000 \
   -O ${file_id}.gvcf
 """
 }