diff --git a/subworkflows/nf-core/bam_qc_picard/main.nf b/subworkflows/nf-core/bam_qc_picard/main.nf
index e4a7e5f0..851268c6 100644
--- a/subworkflows/nf-core/bam_qc_picard/main.nf
+++ b/subworkflows/nf-core/bam_qc_picard/main.nf
@@ -20,7 +20,7 @@ workflow BAM_QC_PICARD {
 
     PICARD_COLLECTMULTIPLEMETRICS( ch_bam_bai, ch_fasta] )
     ch_versions = ch_versions.mix(PICARD_COLLECTMULTIPLEMETRICS.out.versions.first())
-    if (!ch_bait_interval.isEmpty() || !ch_target_interval.isEmpty()) {
+    if (ch_bait_interval || ch_target_interval) {
         if (ch_bait_interval.isEmpty()) {
             log.error("Bait interval channel is empty")
         }