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-rw-r--r--src/runtime/haskell/PGF/Forest.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/runtime/haskell/PGF/Forest.hs b/src/runtime/haskell/PGF/Forest.hs
index be96ac0f3..6a5a0c629 100644
--- a/src/runtime/haskell/PGF/Forest.hs
+++ b/src/runtime/haskell/PGF/Forest.hs
@@ -121,7 +121,7 @@ getAbsTrees (Forest abs cnc forest root) arg@(PArg _ fid) ty dp =
generateForForest (prove dp) e) emptyMetaStore fid
in if null res
then Left (nub err)
- else Right (nubsort [e | (_,_,e) <- res])
+ else Right (nub [e | (_,_,e) <- res])
where
go rec_ scope_ mb_tty_ (PArg hypos fid)
| fid < totalCats cnc = case mb_tty of