diff --git a/modules/bwa/aln/meta.yml b/modules/bwa/aln/meta.yml
index a8b74b8b..8ebaf3da 100644
--- a/modules/bwa/aln/meta.yml
+++ b/modules/bwa/aln/meta.yml
@@ -21,10 +21,10 @@ tools:
 
 input:
   - meta:
-    type: map
-    description: |
-      Groovy Map containing sample information
-      e.g. [ id:'test', single_end:false ]
+      type: map
+      description: |
+        Groovy Map containing sample information
+        e.g. [ id:'test', single_end:false ]
   - reads:
       type: file
       description: |