diff --git a/package.yaml b/package.yaml
index 0aadd7a3f..70a0a0c90 100644
--- a/package.yaml
+++ b/package.yaml
@@ -170,6 +170,7 @@ default-extensions:
 ghc-options:
   - -Wall
   - -fno-warn-type-defaults
+  - -fno-warn-unrecognised-pragmas
   - -fno-warn-partial-type-signatures
 
 when:
diff --git a/src/Handler/Admin.hs b/src/Handler/Admin.hs
index fa09fba75..3eab2f26c 100644
--- a/src/Handler/Admin.hs
+++ b/src/Handler/Admin.hs
@@ -198,8 +198,8 @@ postAdminFeaturesR = do
         (infConflicts,infAmbiguous,infRedundant,infAccepted) <- Candidates.inferHandler
         unless (null infAmbiguous) $ addMessageI Info $ MsgAmbiguousCandidatesRemoved $ length infAmbiguous
         unless (null infRedundant) $ addMessageI Info $ MsgRedundantCandidatesRemoved $ length infRedundant
-        if (null infAccepted)
-          then addMessageI Info    $ MsgNoCandidatesInferred
+        if null infAccepted
+          then addMessageI Info    MsgNoCandidatesInferred
           else addMessageI Success $ MsgCandidatesInferred $ length infAccepted
         return (infConflicts,infAccepted)
       _other -> (,[]) <$> runDB Candidates.conflicts
@@ -263,7 +263,9 @@ postAdminFeaturesR = do
             ]
           dbtFilter     = mempty
           dbtFilterUI   = mempty
-          dbtParams     = def { dbParamsFormAddSubmit = True } -- dbParamsFormEvaluate = liftHandlerT . (runFormPost . identifyForm "degree-table" - (identForm FIDdegree))}
+          dbtParams     = def { dbParamsFormAddSubmit = True
+                              , dbParamsFormAction = Just . SomeRoute $ AdminFeaturesR :#: ("admin-studydegrees-table-wrapper" :: Text)
+                              }
           psValidator   = def & defaultSorting [SortAscBy "name", SortAscBy "short", SortAscBy "key"]
       in dbTable psValidator DBTable{..}
 
@@ -290,7 +292,9 @@ postAdminFeaturesR = do
             ]
           dbtFilter     = mempty
           dbtFilterUI   = mempty
-          dbtParams     = def { dbParamsFormAddSubmit = True } -- , dbParamsFormEvaluate = liftHandlerT . runFormPost }
+          dbtParams     = def { dbParamsFormAddSubmit = True
+                              , dbParamsFormAction = Just . SomeRoute $ AdminFeaturesR :#: ("admin-studyterms-table-wrapper" :: Text)
+                              }
           psValidator   = def & defaultSorting [SortAscBy "name", SortAscBy "short", SortAscBy "key"]
       in dbTable psValidator DBTable{..}
 
diff --git a/src/Handler/Utils/TermCandidates.hs b/src/Handler/Utils/TermCandidates.hs
index fdf91a7f9..0832c343d 100644
--- a/src/Handler/Utils/TermCandidates.hs
+++ b/src/Handler/Utils/TermCandidates.hs
@@ -27,6 +27,7 @@ import qualified Data.Map as Map
 import qualified Database.Esqueleto as E
 -- import Database.Esqueleto.Utils as E
 
+{-# ANN module ("HLint: ignore Use newtype instead of data"::String) #-}
 
 type STKey = Int -- for convenience, assmued identical to field StudyTermCandidateKey
 
@@ -62,7 +63,7 @@ inferHandler = runDB $ inferAcc ([],[],[])
       redundants <- removeRedundant
       accepted <- acceptSingletons
       problems <- conflicts
-      when (not $ null problems) $ throwM $ FailedCandidateInference problems
+      unless (null problems) $ throwM $ FailedCandidateInference problems
       return (ambiguous, redundants, accepted)
 
 {-
diff --git a/test/Database.hs b/test/Database.hs
index 8df98f6e9..c3b83c636 100755
--- a/test/Database.hs
+++ b/test/Database.hs
@@ -291,9 +291,9 @@ fillDb = do
   void . insert $ StudyTermCandidate incidence9 79 "Informatik"
   incidence10 <- liftIO getRandom
   void . insert $ StudyTermCandidate incidence10 103  "Deutsch"
-  void . insert $ StudyTermCandidate incidence10 103  "Betriebswirtschafslehre"
+  void . insert $ StudyTermCandidate incidence10 103  "Betriebswirtschaftslehre"
   void . insert $ StudyTermCandidate incidence10 21   "Deutsch"
-  void . insert $ StudyTermCandidate incidence10 21   "Betriebswirtschafslehre"
+  void . insert $ StudyTermCandidate incidence10 21   "Betriebswirtschaftslehre"
   incidence11 <- liftIO getRandom
   void . insert $ StudyTermCandidate incidence11 221 "Bioinformatik"
   void . insert $ StudyTermCandidate incidence11 221 "Chemie"
@@ -306,9 +306,9 @@ fillDb = do
   void . insert $ StudyTermCandidate incidence11 26  "Biologie"
   incidence12 <- liftIO getRandom
   void . insert $ StudyTermCandidate incidence12 103  "Deutsch"
-  void . insert $ StudyTermCandidate incidence12 103  "Betriebswirtschafslehre"
+  void . insert $ StudyTermCandidate incidence12 103  "Betriebswirtschaftslehre"
   void . insert $ StudyTermCandidate incidence12 21   "Deutsch"
-  void . insert $ StudyTermCandidate incidence12 21   "Betriebswirtschafslehre"
+  void . insert $ StudyTermCandidate incidence12 21   "Betriebswirtschaftslehre"
 
   sfMMp <- insert $ StudyFeatures -- keyword type prevents record syntax here
     maxMuster