diff --git a/bwakit/run-gen-ref b/bwakit/run-gen-ref
index 3ed63b2..58fab68 100755
--- a/bwakit/run-gen-ref
+++ b/bwakit/run-gen-ref
@@ -2,7 +2,7 @@
 
 root=`dirname $0`
 
-url38="ftp://ftp.ncbi.nlm.nih.gov/genomes/all/GCA_000001405.15_GRCh38/seqs_for_alignment_pipelines.ucsc_ids/GCA_000001405.15_GRCh38_full_analysis_set.fna.gz"
+url38="ftp://ftp.ncbi.nlm.nih.gov/genomes/all/GCA/000/001/405/GCA_000001405.15_GRCh38/seqs_for_alignment_pipelines.ucsc_ids/GCA_000001405.15_GRCh38_full_analysis_set.fna.gz"
 url37d5="ftp://ftp.ncbi.nlm.nih.gov/1000genomes/ftp/technical/reference/phase2_reference_assembly_sequence/hs37d5.fa.gz"
 
 if [ $# -eq 0 ]; then