diff --git a/src/modules/mergekmer.nf b/src/modules/mergekmer.nf
index df60a290cad7fe640bbb207a0b508bd8704c68da..7ae901c99afe9955c2dddd605f3b9f2773dcfffb 100644
--- a/src/modules/mergekmer.nf
+++ b/src/modules/mergekmer.nf
@@ -26,7 +26,7 @@ process MERGEKMER {
 }
 
 process COLLATEKMER {
-    tag "$meta.id"
+    tag "$csv"
     label 'big_mem_mono_cpus'
     publishDir "results/", mode: 'copy'