diff --git a/scripts/pylib/twister/twisterlib.py b/scripts/pylib/twister/twisterlib.py
index 575dd346793..45a4371997e 100755
--- a/scripts/pylib/twister/twisterlib.py
+++ b/scripts/pylib/twister/twisterlib.py
@@ -2287,8 +2287,7 @@ class ProjectBuilder(FilterBuilder):
         elif instance.platform.simulation == "mdb-nsim":
             if find_executable("mdb"):
                 instance.handler = BinaryHandler(instance, "nsim")
-                instance.handler.pid_fn = os.path.join(instance.build_dir, "mdb.pid")
-                instance.handler.call_west_flash = True
+                instance.handler.call_make_run = True
         elif instance.platform.simulation == "armfvp":
             instance.handler = BinaryHandler(instance, "armfvp")
             instance.handler.call_make_run = True