diff --git a/src/modules/mergekmer.nf b/src/modules/mergekmer.nf
index 7ae901c99afe9955c2dddd605f3b9f2773dcfffb..5bcbf8f8cfc561da332c72177e76a1fd9a4c1b9c 100644
--- a/src/modules/mergekmer.nf
+++ b/src/modules/mergekmer.nf
@@ -42,7 +42,7 @@ process COLLATEKMER {
     script:
     def args = task.ext.args ?: ''
     """
-    mergekmer --csv ${csv} --output ${csv[1].simpleName}.csv --collate
+    mergekmer --csv ${csv} --output fusion.csv --collate
 
 
     cat <<-END_VERSIONS > versions.yml