diff --git a/users/views.py b/users/views.py
index a52bf27..124a515 100644
--- a/users/views.py
+++ b/users/views.py
@@ -86,8 +86,12 @@ def getICSFile(request, ag):
 								e.name = ab.user.first_name + " " + ab.user.last_name + " abwesend"
 								e.uid = "da-ab-" + str(ab.pk)
 								
-								e.begin = ab.start
-								e.end = ab.end
+								if ab.start < ab.end:
+									e.begin = ab.start
+									e.end = ab.end
+								else:
+									e.begin = ab.start
+									e.end = ab.start + timedelta(minutes=1)
 								e.allday = True
 
 								c.events.add(e)
@@ -119,8 +123,14 @@ def getICSFileAll(request, ag):
 								e = Event()
 								e.name = ab.user.first_name + " " + ab.user.last_name + " | " + ab.reason.name
 								e.uid = "da-ab-" + str(ab.pk)
-								e.begin = ab.start
-								e.end = ab.end
+								
+								if ab.start < ab.end:
+									e.begin = ab.start
+									e.end = ab.end
+								else:
+									e.begin = ab.start
+									e.end = ab.start + timedelta(minutes=1)
+									
 								e.allday = True
 								c.events.add(e)
 							return HttpResponse(c, content_type='text/calendar')
@@ -151,8 +161,13 @@ def getICSFileEx(request, code, ag):
 							e = Event()
 							e.name = ab.user.first_name + " " + ab.user.last_name + " abwesend "
 							e.uid = "da-ab-" + str(ab.pk)
-							e.begin = ab.start
-							e.end = ab.end
+
+							if ab.start < ab.end:
+								e.begin = ab.start
+								e.end = ab.end
+							else:
+								e.begin = ab.start
+								e.end = ab.start + timedelta(minutes=1)
 							#e.allday = True
 							c.events.add(e)
 					return HttpResponse(c, content_type='text/calendar')
@@ -190,8 +205,12 @@ def getICSFileExAll(request, code, ag):
 						e = Event()
 						e.name = ab.user.first_name + " " + ab.user.last_name + " | " + ab.reason.name
 						e.uid = "da-ab-" + str(ab.pk)
-						e.begin = ab.start
-						e.end = ab.end
+						if ab.start < ab.end:
+							e.begin = ab.start
+							e.end = ab.end
+						else:
+							e.begin = ab.start
+							e.end = ab.start + timedelta(minutes=1)
 						e.allday = True
 						c.events.add(e)
 				return HttpResponse(c, content_type='text/calendar')