diff --git a/modules/motus/profile/main.nf b/modules/motus/profile/main.nf
index dac4fe37..6a1acd3d 100644
--- a/modules/motus/profile/main.nf
+++ b/modules/motus/profile/main.nf
@@ -25,7 +25,7 @@ process MOTUS_PROFILE {
     def prefix = task.ext.prefix ?: "${meta.id}"
     def inputs = reads[0].getExtension() == 'bam' ?
                     "-i ${reads}" :
-                    $reads[0].getExtension() == 'mgc' ? "-m $reads" :
+                    reads[0].getExtension() == 'mgc' ? "-m $reads" :
                         meta.single_end ?
                             "-s $reads" : "-f ${reads[0]} -r ${reads[1]}"
     def refdb = db ? "-db ${db}" : ""