diff --git a/installation_and_upgrade/ibex_install_utils/tasks/server_tasks.py b/installation_and_upgrade/ibex_install_utils/tasks/server_tasks.py
index 35f0b7c..a774cde 100644
--- a/installation_and_upgrade/ibex_install_utils/tasks/server_tasks.py
+++ b/installation_and_upgrade/ibex_install_utils/tasks/server_tasks.py
@@ -605,7 +605,7 @@ def update_icp(self, icp_in_labview_modules, register_icp=True):
 
             icp_top = os.path.join(EPICS_PATH, "ICP_Binaries", "isisdae")
             register_icp_commands.add_command(
-                f'cd /d "{icp_top}" && register_programs.bat',
+                f'cd /d "{icp_top}" && register_programs.cmd',
                 "",
                 expected_return_val=None,
             )