diff --git a/tests/modules/filtlong/nextflow.config b/tests/modules/filtlong/nextflow.config
index ec9854c2..f0b90e67 100644
--- a/tests/modules/filtlong/nextflow.config
+++ b/tests/modules/filtlong/nextflow.config
@@ -3,5 +3,6 @@ process {
     publishDir = { "${params.outdir}/${task.process.tokenize(':')[-1].tokenize('_')[0].toLowerCase()}" }
 
     ext.args = "--min_length 10"
+    ext.prefix = "${meta.id}_lr"
 
 }
diff --git a/tests/modules/filtlong/test.yml b/tests/modules/filtlong/test.yml
index 93f847ec..87bd491b 100644
--- a/tests/modules/filtlong/test.yml
+++ b/tests/modules/filtlong/test.yml
@@ -3,7 +3,7 @@
   tags:
     - filtlong
   files:
-    - path: output/filtlong/test_lr_filtlong.fastq.gz
+    - path: output/filtlong/test_lr.fastq.gz
       contains:
         - "@00068f7a-51b3-4933-8fc6-7d6e29181ff9"
 
@@ -12,7 +12,7 @@
   tags:
     - filtlong
   files:
-    - path: output/filtlong/test_lr_filtlong.fastq.gz
+    - path: output/filtlong/test_lr.fastq.gz
       contains:
         - "@00068f7a-51b3-4933-8fc6-7d6e29181ff9"
 
@@ -21,6 +21,6 @@
   tags:
     - filtlong
   files:
-    - path: output/filtlong/test_lr_filtlong.fastq.gz
+    - path: output/filtlong/test_lr.fastq.gz
       contains:
         - "@00068f7a-51b3-4933-8fc6-7d6e29181ff9"