diff --git a/sohstationviewer/model/reftek/reftek_data/header.py b/sohstationviewer/model/reftek/reftek_data/header.py
index 7164988838188cb278cf7eba27899a60447a5739..dafb944fb11d57f1ae11bc043e170a26fe4b91ee 100644
--- a/sohstationviewer/model/reftek/reftek_data/header.py
+++ b/sohstationviewer/model/reftek/reftek_data/header.py
@@ -37,7 +37,7 @@ def parse_rt130_time(year: int, time_bytes: bytes) -> UTCDateTime:
     # H = hour
     # M = minute
     # S = second
-    # T = microsecond
+    # T = millisecond
     day_of_year, hour, minute, second, millisecond = (
         int(time_string[0:3]),
         int(time_string[3:5]),