diff --git a/main.nf b/main.nf
index c10d335..0f1d06e 100644
--- a/main.nf
+++ b/main.nf
@@ -31,5 +31,4 @@ workflow {
     main:
     ch_str = channel.of(params.str)
     ch_chunks = split_text(ch_str)
-    ch_upper = convert_to_upper(ch_chunks.flatten())
-}
+}
\ No newline at end of file