diff --git a/steps/compress.cwl b/steps/compress.cwl
index 7d92ab1179144ab360d001ae2624845d45d515c7..1c9b461c623646516eb35c8ea5b3da36d2564552 100644
--- a/steps/compress.cwl
+++ b/steps/compress.cwl
@@ -9,7 +9,7 @@ outputs:
   - id: compressed
     type: File
     outputBinding:
-      glob: 'out/*.tar.gz'
+      glob: 'out/*.tar'
 baseCommand: 
  - 'bash'
  - 'tar.sh'