diff --git a/load_controller/logger.py b/load_controller/logger.py
index 36c670f..cfc04e8 100644
--- a/load_controller/logger.py
+++ b/load_controller/logger.py
@@ -27,7 +27,7 @@ class Logger(QObject):
         if not log_dir.is_dir():
             log_dir.mkdir()
         self._log_path = log_dir / datetime.datetime.now().strftime(
-            "%Y-%m-%d_%H:%M:%S.csv"
+            "%Y-%m-%d_%H-%M-%S.csv"
         )
         print(f"Logging to {self._log_path}")
         self._start_time = time.time()