diff --git a/main.nf b/main.nf
index 045da7b..81346f4 100755
--- a/main.nf
+++ b/main.nf
@@ -20,7 +20,7 @@ workflow {
         .map { file -> tuple(file.simpleName, file) }
         .set { ch_input }
 
-    EFETCH('NC_036618.1')
+    EFETCH("${params.reference}")
     EFETCH
         .out
         .set { ch_reference }