diff --git a/workflow/main.nf b/workflow/main.nf
index de87ca97d3c70fbf77444f84571597018120f230..0bbb35815dd8a9f9d1bf46ec90de859f9805794f 100644
--- a/workflow/main.nf
+++ b/workflow/main.nf
@@ -78,8 +78,8 @@ process checkDesignFile {
 
   input:
 
-  designFile
-  readsList
+  file designFile
+  file readsList
 
   output: