diff --git a/tools/bwa-aln.cwl b/tools/bwa-aln.cwl
index 086b910c0..4af708d30 100755
--- a/tools/bwa-aln.cwl
+++ b/tools/bwa-aln.cwl
@@ -6,9 +6,11 @@ class: CommandLineTool
 
 requirements:
   - $import: envvar-global.yml
-  - $import: bwa-docker.yml
   - class: InlineJavascriptRequirement
 
+hints:
+  - $import: bwa-docker.yml
+
 inputs:
   - id: "prefix"
     type: File