diff --git a/src/Handler/Utils/Exam.hs b/src/Handler/Utils/Exam.hs
index 3d0068735..74188ef0f 100644
--- a/src/Handler/Utils/Exam.hs
+++ b/src/Handler/Utils/Exam.hs
@@ -613,7 +613,11 @@ examAutoOccurrence (hash -> seed) rule ExamAutoOccurrenceConfig{..} occurrences
                       _rule -> singleton $ head alphabet
 
                     mappingDescription :: Set ExamOccurrenceMappingDescription
-                    mappingDescription = Set.fromList $ ExamOccurrenceMappingRange (toNullable start) end : specialMapping
+                    mappingDescription
+                      -- if start > end, the room only consists of users with a non-ascii tag directly adjacent to the last room
+                      -- therefore, leave out a potentially confusing range description
+                      | toNullable start > end = Set.fromList specialMapping
+                      | otherwise  = Set.fromList $ ExamOccurrenceMappingRange (toNullable start) end : specialMapping
                       
                     specialMapping :: [ExamOccurrenceMappingDescription]
                     specialMapping