diff --git a/python_modules/dagster/dagster/_core/execution/context/dual_state_context.py b/python_modules/dagster/dagster/_core/execution/context/dual_state_context.py
index be9823977807f..57e6464e990c9 100644
--- a/python_modules/dagster/dagster/_core/execution/context/dual_state_context.py
+++ b/python_modules/dagster/dagster/_core/execution/context/dual_state_context.py
@@ -59,7 +59,7 @@ def call_on_del(self) -> None:
 
     @property
     def has_been_accessed(self) -> bool:
-        return bool(self._resources)
+        return isinstance(self._resources, Resources)
 
     def get_already_accessed_resources(self) -> Resources:
         check.invariant(self.has_been_accessed)