diff --git a/src/nf_modules/bwa/main.nf b/src/nf_modules/bwa/main.nf
index a6b60adc944876bb9942b38e6f462ff5b98357a8..e97f218af79bc57491f69f50df265da34dd2404e 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 | \
-  samtools view -@ ${task.cpus} -Sb - > ${pair_id}.bam
+  samtools view -@ ${task.cpus} -Sb - > ${file_id}.bam
 """
 }