diff --git a/modules/local/irma.nf b/modules/local/irma.nf
index 8ad2b69..f45233e 100644
--- a/modules/local/irma.nf
+++ b/modules/local/irma.nf
@@ -37,7 +37,7 @@ process IRMA {
 
   IRMA $irma_module $reads $meta.id
 
-  if compgen -G "${meta.id}/amended_consensus/*.fa" > /dev/null; then
+  if ls "${meta.id}/amended_consensus/*.fa" > /dev/null 2>&1; then
     cat ${meta.id}/amended_consensus/*.fa > ${meta.id}.irma.consensus.fasta
   fi
   ln -s .command.log $irma_log