diff --git a/python_modules/dagster/dagster/_core/definitions/run_status_sensor_definition.py b/python_modules/dagster/dagster/_core/definitions/run_status_sensor_definition.py
index 6a4ac5a6ee1d3..b360da94ba1d6 100644
--- a/python_modules/dagster/dagster/_core/definitions/run_status_sensor_definition.py
+++ b/python_modules/dagster/dagster/_core/definitions/run_status_sensor_definition.py
@@ -1102,7 +1102,7 @@ def inner(
         )
 
         if jobs and monitor_all:
-            DagsterInvalidDefinitionError(
+            raise DagsterInvalidDefinitionError(
                 f"Cannot specify both {'monitor_all_code_locations' if monitor_all_code_locations else 'monitor_all_repositories'} and"
                 f" {'monitored_jobs' if monitored_jobs else 'job_selection'}."
             )