diff --git a/oscar/SleepLib/machine.cpp b/oscar/SleepLib/machine.cpp
index e765d9f5..9c128c27 100644
--- a/oscar/SleepLib/machine.cpp
+++ b/oscar/SleepLib/machine.cpp
@@ -387,7 +387,7 @@ bool Machine::AddSession(Session *s)
     if (session_length < ignore_sessions) {
         // keep the session to save importing it again, but don't add it to the day record this time
         qDebug() << s->session() << "Ignoring short session <" << ignore_sessions
-            << "["+QDateTime::fromTime_t(s->session()).toString("MMM dd, yyyy hh:mm:ss")+"]";
+            << "["+QDateTime::fromMSecsSinceEpoch(s->first()).toString("MMM dd, yyyy hh:mm:ss")+"]";
         return true;
     }