diff --git a/workflow/rna-seq.nf b/workflow/rna-seq.nf
index 744da691be6a78c03e6aa33ff6bc961dcf9e416b..f64958780e82ae790f76c466a91ded40b149001f 100644
--- a/workflow/rna-seq.nf
+++ b/workflow/rna-seq.nf
@@ -427,6 +427,7 @@ process inferMetadata {
   output:
     path "infer.csv" into inferedMetadata
     path "${inBam.baseName}.tin.xls" into tin
+    path "${repRID}.insertSize.inner_distance_freq.txt" optional true into innerDistance
 
 
   script: