diff --git a/src/fasta_sampler.nf b/src/fasta_sampler.nf
index 434b9b27ab9b8eb79360281f26a5e2e11fdb4cc3..4197b8b6b5e691e4b1737ac06111a69c334fbd31 100644
--- a/src/fasta_sampler.nf
+++ b/src/fasta_sampler.nf
@@ -1,3 +1,6 @@
+Channel
+  .fromPath( "data/tiny_dataset/fasta/*.fasta" )
+  .set { fasta_file }
 process sample_fasta {
   input:
 file fasta from fasta_file