diff --git a/workflow/rna-seq.nf b/workflow/rna-seq.nf
index 9dbb69b73cc80017f3d71f76f801ebdc4aed7323..3a6918b0fa7a06c281dd7393b62c975ebbd3f396 100755
--- a/workflow/rna-seq.nf
+++ b/workflow/rna-seq.nf
@@ -140,7 +140,7 @@ process parseMetadata {
     echo "LOG: endedness manually detected: \${endsManual}" >>${repRID}.parseMetadata.err
     
     
-    if [ '\${endsMeta}' == "uk" ]
+    if [ '\${endsMeta}' == 'uk' ]
     then
       ends=\${endsManual}
       echo "LOG: manual detected endness used" >>${repRID}.parseMetadata.err