diff --git a/law/workflow/remote.py b/law/workflow/remote.py
index 368e5281..2a4ef192 100644
--- a/law/workflow/remote.py
+++ b/law/workflow/remote.py
@@ -513,6 +513,9 @@ def _maximum_resources(cls, resources, n_parallel):
         # cap by the maximum number of parallel jobs, but in a way such that maximizes the sum of
         # all possible resources that could be claimed at any given point in time
         # (for evenly distributed resources across jobs, this would not be necessary)
+        if not resources:
+            return {}
+
         if isinstance(resources, dict):
             resources = list(resources.values())