diff --git a/qa/qa_instance.py b/qa/qa_instance.py
index ecfed23aa563448ff9c83d4a9b11b54742df770f..9dbe5decaba83bc1722f674645749db4663845b5 100644
--- a/qa/qa_instance.py
+++ b/qa/qa_instance.py
@@ -611,7 +611,9 @@ def TestInstanceModifyPrimaryAndBack(instance, currentnode, othernode):
   current = currentnode.primary
   other = othernode.primary
 
-  filestorage = qa_config.get("file-storage-dir")
+  # FIXME: the qa doesn't have a customizable file storage dir parameter. As
+  # such for now we use the default.
+  filestorage = pathutils.DEFAULT_FILE_STORAGE_DIR
   disk = os.path.join(filestorage, name)
 
   AssertCommand(["gnt-instance", "modify", "--new-primary=%s" % other, name],