diff --git a/unified_planning/engines/pddl_anytime_planner.py b/unified_planning/engines/pddl_anytime_planner.py
index 45239dba3..96ccbe64c 100644
--- a/unified_planning/engines/pddl_anytime_planner.py
+++ b/unified_planning/engines/pddl_anytime_planner.py
@@ -132,7 +132,7 @@ def _parse_planner_output(self, writer: "Writer", planner_output: str):
         for l in planner_output.splitlines():
             if self._starting_plan_str() in l:
                 writer.storing = True
-            elif self._ending_plan_str() in l:
+            elif writer.storing and self._ending_plan_str() in l:
                 plan_str = "\n".join(writer.current_plan)
                 plan = self._plan_from_str(
                     writer.problem, plan_str, self._writer.get_item_named