diff --git a/engine/nsmservercontrol.py b/engine/nsmservercontrol.py
index 9657fcb..599a959 100644
--- a/engine/nsmservercontrol.py
+++ b/engine/nsmservercontrol.py
@@ -42,6 +42,7 @@ from datetime import datetime
 from sys import exit as sysexit
 from time import sleep
 from ctypes import c_ulong
+from functools import lru_cache
 
 #Our files
 from .comparedirectories import md5_dir
@@ -1429,6 +1430,7 @@ class NsmServerControl(object):
         return hashAddress % 65521
 
 
+    @lru_cache(maxsize=128)
     def _get_lock_file_name(self, session_name:str, full_absolute_session_path:str) -> pathlib.Path:
         """This is a translation from the nsm/nsmd.c function of the same name.
         We use it to find the lock file on our system.