1 files changed, 4 insertions, 1 deletions
diff --git a/mimelib/datetime.cpp b/mimelib/datetime.cpp
index a704e127b..64f2eef2e 100644
--- a/mimelib/datetime.cpp
+++ b/mimelib/datetime.cpp
@@ -125,7 +125,10 @@ void DwDateTime::Init()
         DwUint32 t_local = my_inv_gmtime(&local);
         DwUint32 t_utc = my_inv_gmtime(&utc);
         sDefaultZone = (int) (t_local - t_utc)/60;
-        sIsDefaultZoneSet = 1;
+
+        // do not flag this as it would never check the zone again, which
+        // would lead to wrong timediff on the DST/non-DST day change
+        //sIsDefaultZoneSet = 1;
     }
     // Set the time zone from the default time zone
     mZone = sDefaultZone;