diff --git a/src/nf_modules/samtools/main.nf b/src/nf_modules/samtools/main.nf
index 9493c0e4cddbb739bb03c740ac94f786806da55d..75bbb514bbd61a945b913e3f91dba1d045827cba 100644
--- a/src/nf_modules/samtools/main.nf
+++ b/src/nf_modules/samtools/main.nf
@@ -178,7 +178,7 @@ process merge_multi_bam {
     tuple val(file_id), path("*_merged.bam*"), emit: bam
   script:
 """
-samtools merge ${bams} \
+samtools merge ${bams} > \
   ${bams[0].simpleName}_merged.bam
 """
 }