diff --git a/src/Handler/Course/Edit.hs b/src/Handler/Course/Edit.hs
index 09e032bbb..a4ed224a0 100644
--- a/src/Handler/Course/Edit.hs
+++ b/src/Handler/Course/Edit.hs
@@ -243,6 +243,15 @@ makeCourseForm miButtonAction template = identifyForm FIDcourse . validateFormDB
             allocationOptions <- mkOptionList <$> mapM mkAllocationOption (availableAllocations ++ activeAllocations)
 
             let
+              explainedAllocationOptions = return allocationOptions `explainOptionList` \allocId -> hoistMaybe . listToMaybe $ do
+                (Entity allocId' Allocation{..}, _) <- availableAllocations'
+                guard $ allocId' == allocId
+                toWidget <$> hoistMaybe allocationStaffDescription
+
+              doExplain = has (folded . _entityVal . _allocationStaffDescription . _Just) $ availableAllocations ++ activeAllocations
+              allocField | doExplain = explainedSelectionField Nothing explainedAllocationOptions
+                         | otherwise = selectField' Nothing $ return allocationOptions
+              
               userAdmin = not $ null adminSchools
               mayChange = Just False /= fmap (|| userAdmin) currentAllocationAvailable
 
@@ -254,7 +263,7 @@ makeCourseForm miButtonAction template = identifyForm FIDcourse . validateFormDB
                       | otherwise
                       = aforcedJust
                  in AllocationCourseForm
-                    <$> ainp (selectField' Nothing $ return allocationOptions) (fslI MsgCourseAllocation) (fmap acfAllocation $ template >>= cfAllocation)
+                    <$> ainp allocField (fslI MsgCourseAllocation) (fmap acfAllocation $ template >>= cfAllocation)
                     <*> ainp (natFieldI MsgCourseAllocationMinCapacityMustBeNonNegative) (fslI MsgCourseAllocationMinCapacity & setTooltip MsgCourseAllocationMinCapacityTip) (fmap acfMinCapacity $ template >>= cfAllocation)
                     <*> apopt checkBoxField (fslI MsgCourseDeregisterNoShow & setTooltip MsgCourseDeregisterNoShowTip) ((<|> Just True) . fmap acfDeregisterNoShow $ template >>= cfAllocation)