diff --git a/containers/src/Data/IntMap/Internal.hs b/containers/src/Data/IntMap/Internal.hs
index bf1508c41..eadb054d9 100644
--- a/containers/src/Data/IntMap/Internal.hs
+++ b/containers/src/Data/IntMap/Internal.hs
@@ -2186,7 +2186,7 @@ updateMinWithKey f t =
     go f' (Tip k y) = case f' k y of
                         Just y' -> Tip k y'
                         Nothing -> Nil
-    go _ Nil = error "updateMinWithKey Nil"
+    go _ Nil =  Nil
 
 -- | \(O(\min(n,W))\). Update the value at the maximal key.
 --
@@ -2202,7 +2202,7 @@ updateMaxWithKey f t =
     go f' (Tip k y) = case f' k y of
                         Just y' -> Tip k y'
                         Nothing -> Nil
-    go _ Nil = error "updateMaxWithKey Nil"
+    go _ Nil = Nil
 
 
 data View a = View {-# UNPACK #-} !Key a !(IntMap a)