diff --git a/scripts/wk/os/linux.py b/scripts/wk/os/linux.py
index e76f37aa..49fedcec 100644
--- a/scripts/wk/os/linux.py
+++ b/scripts/wk/os/linux.py
@@ -18,7 +18,7 @@ UUID_CORESTORAGE = '53746f72-6167-11aa-aa11-00306543ecac'
 
 
 # Functions
-def build_volume_report(device_path=None) -> str:
+def build_volume_report(device_path=None) -> list:
   """Build volume report using lsblk, returns list.
 
   If device_path is provided the report is limited to that device.