diff --git a/src/mtime_timedelta.c b/src/mtime_timedelta.c
index 5d45fccaeda05bee0f2cbf4b16f9d4b69ba16f5b..de4a7b8946e09400fcaf2407349bc9e84084d746 100644
--- a/src/mtime_timedelta.c
+++ b/src/mtime_timedelta.c
@@ -865,6 +865,9 @@ julianDeltaToTimeDelta(struct _juliandelta* jd, struct _datetime* base_dt, struc
   /* Pointer to an array of month_specific_delta_in_months. */
   const int (*msdinm)[NO_OF_MONTHS_IN_A_YEAR+1];
 
+  /* We simply assume this routines returns a "normalized" timedelta. */
+  td_return->flag_std_form = 1;
+
   /* Set parameter according to calender. */
   switch (getCalendarType())
     {