diff --git a/conf/igenomes.config b/conf/igenomes.config
index 4c71497e86..096c95e2fb 100644
--- a/conf/igenomes.config
+++ b/conf/igenomes.config
@@ -11,7 +11,7 @@ params {
   genomes {
     'GRCh37' {
       ac_loci                  = "${params.igenomes_base}/Homo_sapiens/GATK/GRCh37/Annotation/ASCAT/1000G_phase3_20130502_SNP_maf0.3.loci"
-      ac_lociGC                = "${params.igenomes_base}/Homo_sapiens/GATK/GRCh37/Annotation/ASCAT/1000G_phase3_20130502_SNP_maf0.3.loci.gc"
+      ac_loci_gc                = "${params.igenomes_base}/Homo_sapiens/GATK/GRCh37/Annotation/ASCAT/1000G_phase3_20130502_SNP_maf0.3.loci.gc"
       bwa                      = "${params.igenomes_base}/Homo_sapiens/GATK/GRCh37/Sequence/BWAIndex/human_g1k_v37_decoy.fasta.{amb,ann,bwt,pac,sa}"
       chr_dir                  = "${params.igenomes_base}/Homo_sapiens/GATK/GRCh37/Sequence/Chromosomes"
       chr_length               = "${params.igenomes_base}/Homo_sapiens/GATK/GRCh37/Sequence/Length/human_g1k_v37_decoy.len"
@@ -31,7 +31,7 @@ params {
     }
     'GRCh38' {
       ac_loci                  = "${params.igenomes_base}/Homo_sapiens/GATK/GRCh38/Annotation/ASCAT/1000G_phase3_GRCh38_maf0.3.loci"
-      ac_lociGC                = "${params.igenomes_base}/Homo_sapiens/GATK/GRCh38/Annotation/ASCAT/1000G_phase3_GRCh38_maf0.3.loci.gc"
+      ac_loci_gc                = "${params.igenomes_base}/Homo_sapiens/GATK/GRCh38/Annotation/ASCAT/1000G_phase3_GRCh38_maf0.3.loci.gc"
       bwa                      = "${params.igenomes_base}/Homo_sapiens/GATK/GRCh38/Sequence/BWAIndex/Homo_sapiens_assembly38.fasta.64.{alt,amb,ann,bwt,pac,sa}"
       chr_dir                  = "${params.igenomes_base}/Homo_sapiens/GATK/GRCh38/Sequence/Chromosomes"
       chr_length               = "${params.igenomes_base}/Homo_sapiens/GATK/GRCh38/Sequence/Length/Homo_sapiens_assembly38.len"