diff --git a/Snake.config.json b/Snake.config.json
index ba5b671507e2d07b0546d76e58b58aa1b7ecd662..a1f93519cf27181de0e841060055dd2738bf09e7 100644
--- a/Snake.config.json
+++ b/Snake.config.json
@@ -1,5 +1,5 @@
 {
-    "chromosomes"   : ["chrX","chr1","chr2","chr3","chr4","chr5","chr6","chr7","chr8","chr9","chr10","chr11","chr12","chr13","chr14","chr15","chr16","chr17","chr18","chr19","chr20","chr21","chr22"],
+    "chromosomes"   : ["chr1","chr2","chr3","chr4","chr5","chr6","chr7","chr8","chr9","chr10","chr11","chr12","chr13","chr14","chr15","chr16","chr17","chr18","chr19","chr20","chr21","chr22","chrX"],
 
     "reference"     : "/g/korbel/shared/datasets/refgenomes/human/GCA_000001405.15_GRCh38_no_alt_analysis_set.fna",
     "mosaicatcher"  : "/g/korbel/meiers/tools/mosaicatcher/mosaicatcher_experimental/build/mosaicatcher",