diff --git a/src/nf_modules/bwa/main.nf b/src/nf_modules/bwa/main.nf
index 998643b5b18ee85f0c66ac354e5f2e0a8c1ada38..38b925128bac786698dd3f8590a3cc50ef996dcd 100644
--- a/src/nf_modules/bwa/main.nf
+++ b/src/nf_modules/bwa/main.nf
@@ -39,7 +39,7 @@ process mapping_fastq {
 bwa mem -t ${task.cpus} \
 ${index_id} ${reads[0]} ${reads[1]} 2> \
   ${file_id}_bwa_report.txt | \
-  sambamba view -S -t ${task/cpus} -f bam - > ${file_id}.bam
+  sambamba view -S -t ${task.cpus} -f bam - > ${file_id}.bam
 """
 }