diff --git a/subworkflows/local/profiling.nf b/subworkflows/local/profiling.nf
index ed61f4b..d23ee11 100644
--- a/subworkflows/local/profiling.nf
+++ b/subworkflows/local/profiling.nf
@@ -233,6 +233,6 @@ workflow PROFILING {
     classifications = ch_raw_classifications
     profiles        = ch_raw_profiles    // channel: [ val(meta), [ reads ] ] - should be text files or biom
     versions        = ch_versions          // channel: [ versions.yml ]
-    motu_version    = params.run_motus ? MOTUS_PROFILE.out.versions.first() : Channel.empty([])
+    motu_version    = params.run_motus ? MOTUS_PROFILE.out.versions.first() : Channel.empty()
     mqc             = ch_multiqc_files
 }