diff --git a/testplan/runnable/base.py b/testplan/runnable/base.py
index 6506dd072..fbfb28ee2 100644
--- a/testplan/runnable/base.py
+++ b/testplan/runnable/base.py
@@ -600,7 +600,8 @@ def _get_tasks(
                         )
                     )
                     if num_of_parts < 1:
-                        raise RuntimeError(
+                        num_of_parts = 1
+                        self.logger.error(
                             f"Calculated num_of_parts for {uid} is {num_of_parts},"
                             " check the input runtime_data and auto_part_runtime_limit"
                         )