diff --git a/workflow/rna-seq.nf b/workflow/rna-seq.nf
index 9e8f206de7b2c2af78b06f3064ce3eff183797e7..1295e5c99623e4b405d5ab1881c33d66f81a637b 100644
--- a/workflow/rna-seq.nf
+++ b/workflow/rna-seq.nf
@@ -386,7 +386,7 @@ process parseMetadata {
     elif [ "${fastqCount}" -eq "0" ]
     then
       fastqCountError=true
-      fastqCountError_details="**No valid fastqs detected (may not match .R{1,2}.fastq.gz convention)**"
+      fastqCountError_details="**No valid fastqs detected (may not match .R{12}.fastq.gz convention)**"
     elif [ "\${endsMeta}" == "se" ] && [ "${fastqCount}" -ne "1" ]
     then
       fastqCountError=true