diff --git a/LCU/PPSTune/ppstune.py b/LCU/PPSTune/ppstune.py
index d330e3316cd478a18bc8c0b98326623051501fa4..8ad4911c88a77095f5c4ee366efd8419b3228118 100755
--- a/LCU/PPSTune/ppstune.py
+++ b/LCU/PPSTune/ppstune.py
@@ -2129,7 +2129,7 @@ def initialize_logging(station, log_dir, log_level):
     logger.setLevel(level)
     formatter    = logging.Formatter(log_format)
 
-    file_handler = logging.FileHandler(log_file_name)
+    file_handler = logging.FileHandler(log_file_name,'w')
     logger.addHandler(file_handler)
 
     if len(logger.handlers) == 1: