diff --git a/pyreisejl/utility/const.py b/pyreisejl/utility/const.py
index 25541d2b..32bbb197 100644
--- a/pyreisejl/utility/const.py
+++ b/pyreisejl/utility/const.py
@@ -1,5 +1,9 @@
-SCENARIO_LIST = "/home/bes/pcm/ScenarioList.csv"
-EXECUTE_LIST = "/home/bes/pcm/ExecuteList.csv"
-EXECUTE_DIR = "/home/bes/pcm/tmp"
-INPUT_DIR = "/home/bes/pcm/data/input"
-OUTPUT_DIR = "/home/bes/pcm/data/output"
+import posixpath
+
+DATA_ROOT_DIR = "/mnt/bes/pcm"
+
+SCENARIO_LIST = posixpath.join(DATA_ROOT_DIR, "ScenarioList.csv")
+EXECUTE_LIST = posixpath.join(DATA_ROOT_DIR, "ExecuteList.csv")
+EXECUTE_DIR = posixpath.join(DATA_ROOT_DIR, "tmp")
+INPUT_DIR = posixpath.join(DATA_ROOT_DIR, "data", "input")
+OUTPUT_DIR = posixpath.join(DATA_ROOT_DIR, "data", "output")