diff --git a/weldx/time.py b/weldx/time.py
index 5b5c7e1b9..8aded0950 100644
--- a/weldx/time.py
+++ b/weldx/time.py
@@ -629,7 +629,7 @@ def resample(self, number_or_interval: int | types_timedelta_like):
         TimedeltaIndex([       '0 days 00:00:03', '0 days 00:00:04.500000',
                                '0 days 00:00:06', '0 days 00:00:07.500000',
                                '0 days 00:00:09'],
-                       dtype='timedelta64[ns]', freq='1500L')
+                       dtype='timedelta64[ns]', freq='1500ms')
 
         """
         if len(self) <= 1: