diff --git a/src/Rel8/Expr/Time.hs b/src/Rel8/Expr/Time.hs
index 3d8cde9f..e56ffd8a 100644
--- a/src/Rel8/Expr/Time.hs
+++ b/src/Rel8/Expr/Time.hs
@@ -34,7 +34,7 @@ import Prelude
 
 -- rel8
 import Rel8.Expr ( Expr )
-import Rel8.Expr.Function ( binaryOperator, function, nullaryFunction )
+import Rel8.Expr.Function ( binaryOperator, function )
 import Rel8.Expr.Opaleye ( castExpr, unsafeCastExpr, unsafeLiteral, fromPrimExpr, toPrimExpr )
 import Rel8.Type ( DBType )
 import qualified Opaleye.Internal.HaskellDB.PrimQuery as Opaleye