diff --git a/messages/uniworx/de-de-formal.msg b/messages/uniworx/de-de-formal.msg
index a1ece1c77..ae182100e 100644
--- a/messages/uniworx/de-de-formal.msg
+++ b/messages/uniworx/de-de-formal.msg
@@ -271,6 +271,7 @@ CourseLecturerEmail: E-Mail
 CourseLecturer: Dozent
 CourseAssistant: Assistent
 CourseLecturerAlreadyAdded: Dieser Nutzer ist bereits als Kursverwalter eingetragen
+CourseVisibilityEndMustBeAfterStart: Ende des Sichtbarkeitszeitraums muss nach dem Anfang liegen
 CourseRegistrationEndMustBeAfterStart: Ende des Anmeldezeitraums muss nach dem Anfang liegen
 CourseDeregistrationEndMustBeAfterStart: Ende des Abmeldezeitraums muss nach dem Anfang des Anmeldezeitraums liegen
 CourseUserMustBeLecturer: Aktueller Benutzer muss als Kursverwalter eingetragen sein
diff --git a/messages/uniworx/en-eu.msg b/messages/uniworx/en-eu.msg
index ecb62a502..6a41d64b5 100644
--- a/messages/uniworx/en-eu.msg
+++ b/messages/uniworx/en-eu.msg
@@ -270,7 +270,8 @@ CourseLecturerEmail: Email
 CourseLecturer: Lecturer
 CourseAssistant: Assistant
 CourseLecturerAlreadyAdded: This user is already configured as a course administrator
-CourseRegistrationEndMustBeAfterStart: The end of the registration period must be before its start
+CourseVisibilityEndMustBeAfterStart: The end of the visibility period must be after its start
+CourseRegistrationEndMustBeAfterStart: The end of the registration period must be after its start
 CourseDeregistrationEndMustBeAfterStart: The end of the deregistration period must be after the start of the registration period
 CourseUserMustBeLecturer: The current user needs to be a course administrator
 CourseAllocationRequiresCapacity: Course capacity needs to be specified if the course participates in a central allocation
diff --git a/src/Handler/Course/Edit.hs b/src/Handler/Course/Edit.hs
index fef09d719..6dde05c66 100644
--- a/src/Handler/Course/Edit.hs
+++ b/src/Handler/Course/Edit.hs
@@ -328,6 +328,8 @@ validateCourse = do
       | otherwise
         -> return Nothing
 
+  guardValidation MsgCourseVisibilityEndMustBeAfterStart
+    $ NTop cfVisFrom <= NTop cfVisTo
   guardValidation MsgCourseRegistrationEndMustBeAfterStart
     $ NTop cfRegFrom <= NTop cfRegTo
   guardValidation MsgCourseDeregistrationEndMustBeAfterStart