diff --git a/reframe/frontend/executors/__init__.py b/reframe/frontend/executors/__init__.py
index 350a33bdd0..a7699aa9b3 100644
--- a/reframe/frontend/executors/__init__.py
+++ b/reframe/frontend/executors/__init__.py
@@ -319,7 +319,7 @@ def finalize(self):
                 jsonext.dump(self.check, fp, indent=2)
         except OSError as e:
             logging.getlogger().warning(
-                f'could not dump test case {self.case}: {e}'
+                f'could not dump test case {self.testcase}: {e}'
             )
 
         self._current_stage = 'finalize'