diff --git a/workflow/rna-seq.nf b/workflow/rna-seq.nf
index fa8a88a831e600e50dd7d46f54fee8e70283b49c..d4a6c2be4b2cc248b369f19d64fb0701b2a23acd 100644
--- a/workflow/rna-seq.nf
+++ b/workflow/rna-seq.nf
@@ -823,7 +823,7 @@ process inferMetadata {
       if [ "${speciesForce}" == "" ]
       then
         speciesError=true
-        speciesError_details="**Inference of species returns an ambiguous result:** Percent aligned to human = \${align_hu}, percent aligned to mouse = \${align_mo}"
+        speciesError_details="**Inference of species returns an ambiguous result:** Percent aligned to human = \${align_hu}\, percent aligned to mouse = \${align_mo}"
       fi
     fi
     if [ "${speciesForce}" != "" ]