diff --git a/Handler/Shared.hs b/Handler/Shared.hs
index ef745ce..a145e66 100644
--- a/Handler/Shared.hs
+++ b/Handler/Shared.hs
@@ -338,8 +338,11 @@ testComparator (Entity _ a) (Entity _ b) =
   ((fromMaybe unknownPriority $ testPriority b) `compare` (fromMaybe unknownPriority $ testPriority a))
   where unknownPriority = 9999
 
+formatNonScientifically :: Double -> Text
+formatNonScientifically = T.pack . (printf "%f")
+
 formatFullScore :: Maybe Evaluation -> Text
-formatFullScore (Just evaluation) = fromMaybe "???" (T.pack <$> show <$> evaluationScore evaluation)
+formatFullScore (Just evaluation) = fromMaybe "???" (formatNonScientifically <$> evaluationScore evaluation)
 formatFullScore Nothing = "N/A"
 
 formatTruncatedScore :: Maybe Int -> Maybe Evaluation -> Text
diff --git a/Handler/ShowChallenge.hs b/Handler/ShowChallenge.hs
index 2ad8ae5..1006532 100644
--- a/Handler/ShowChallenge.hs
+++ b/Handler/ShowChallenge.hs
@@ -419,7 +419,7 @@ checkOrInsertEvaluation repoDir chan out = do
   maybeEvaluation <- runDB $ getBy $ UniqueEvaluationTestChecksum (outTest out) (outChecksum out)
   case maybeEvaluation of
     Just (Entity _ evaluation) -> do
-      msg chan $ concat ["Already evaluated with score ", (T.pack $ fromMaybe "???" $ show <$> evaluationScore evaluation)]
+      msg chan $ concat ["Already evaluated with score ", (fromMaybe "???" $ formatNonScientifically <$> evaluationScore evaluation)]
     Nothing -> do
       msg chan $ "Start evaluation..."
       challengeDir <- getRepoDir $ challengePrivateRepo challenge
@@ -429,7 +429,7 @@ checkOrInsertEvaluation repoDir chan out = do
         Right (Left _) -> do
           err chan "Cannot parse options, check the challenge repo"
         Right (Right (_, Just [(_, [result])])) -> do
-          msg chan $ concat [ "Evaluated! Score ", (T.pack $ show result) ]
+          msg chan $ concat [ "Evaluated! Score ", (formatNonScientifically result) ]
           time <- liftIO getCurrentTime
           _ <- runDB $ insert $ Evaluation {
             evaluationTest=outTest out,