diff --git a/Handler/ShowChallenge.hs b/Handler/ShowChallenge.hs
index 604c483..a4f079b 100644
--- a/Handler/ShowChallenge.hs
+++ b/Handler/ShowChallenge.hs
@@ -281,8 +281,7 @@ getOuts chan submissionId = do
   activeTests <- runDB $ selectList [TestChallenge ==. challengeId, TestActive ==. True] []
   testsDone <- filterM (liftIO . doesOutExist repoDir) activeTests
   theVariant <- getVariant submissionId "out"
-  outs' <- mapM (outForTest repoDir submissionId) testsDone
-  let outs = map (\o -> o { outVariant = Just theVariant}) outs'
+  outs <- mapM (outForTest repoDir submissionId theVariant) testsDone
   mapM_ checkOrInsertOut outs
   mapM_ (checkOrInsertEvaluation repoDir chan) outs
   return outs
@@ -299,12 +298,12 @@ doesOutExist repoDir (Entity _ test) = do
   result <- findOutFile repoDir test
   return $ isJust result
 
-outForTest repoDir submissionId (Entity testId test) = do
+outForTest repoDir submissionId variantId (Entity testId test) = do
   (Just outF) <- liftIO $ findOutFile repoDir test
   checksum <- liftIO $ gatherSHA1ForCollectionOfFiles [outF]
   return Out {
     outSubmission=submissionId,
-    outVariant=Nothing,
+    outVariant=variantId,
     outTest=testId,
     outChecksum=SHA1 checksum }
 
diff --git a/config/models b/config/models
index 93eeda4..8d6e524 100644
--- a/config/models
+++ b/config/models
@@ -81,10 +81,11 @@ Comment
     text Textarea
 Out
     submission SubmissionId
-    variant VariantId Maybe
+    variant VariantId
     test TestId
     checksum SHA1
     UniqueOutSubmissionTestChecksum submission test checksum
+    UniqueOutVariantTestChecksum variant test checksum
 Tag
     name Text
     description Text Maybe