diff --git a/configure.py b/configure.py
index 5c72256..48c7ebb 100755
--- a/configure.py
+++ b/configure.py
@@ -82,7 +82,7 @@ def __init__(self, config: Config, args):
                 project.golden_harden()
 
             if args.update_shuttle:
-                project.check_ports(True)
+                project.check_ports(config.powered_netlists, True)
                 project.check_num_cells()
 
             self.projects.append(project)