diff --git a/garminicalexport/activities.py b/garminicalexport/activities.py
index 6dbf29e..b0e248b 100644
--- a/garminicalexport/activities.py
+++ b/garminicalexport/activities.py
@@ -81,9 +81,9 @@ def ical_dtstart(self) -> datetime:
 
     @property
     def ical_dtend(self) -> datetime:
-        duration = self._data.get("elapsedDuration") \
-            or self._data.get("duration") or 0
-        return self.ical_dtstart + timedelta(seconds=duration)
+        duration = self._data.get(
+            "elapsedDuration", self._data.get("duration"))
+        return self.ical_dtstart + timedelta(seconds=round(duration or 0))
 
 
 class RunningActivity(Activity):
diff --git a/setup.py b/setup.py
index f16bf8f..bc006f8 100644
--- a/setup.py
+++ b/setup.py
@@ -11,7 +11,7 @@ def readme():
 
 setup(
     name="garmin-ical-export",
-    version="1.0.6",
+    version="1.0.7",
     description="Export Garmin Connect activities to iCalendar file",
     long_description=readme(),
     long_description_content_type="text/markdown",