diff --git a/workflows/quantms.nf b/workflows/quantms.nf
index ce19137a..86fca0d1 100644
--- a/workflows/quantms.nf
+++ b/workflows/quantms.nf
@@ -135,7 +135,8 @@ workflow QUANTMS {
         ch_versions = ch_versions.mix(DIA.out.versions.ifEmpty(null))
 
         // Other subworkflow will return null when performing another subworkflow due to unknown reason.
-        ch_versions = ch_versions.filter( ~/versions/ )
+        ch_versions = ch_versions.filter{ it != null }
+
     }
 
     softwareVersionsToYAML(ch_versions)