diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Revision history for railroad
 
+## 0.1.1.3 -- 2026-10-10
+* Documentation fixes: correct "success" typo and the doc comment of `(?)` in `Railroad.MonadError`.
+
 ## 0.1.1.2 -- 2026-04-17
 * Remove strictness annotation from `TooMany` constructor in `CardinalityError`.
 
diff --git a/railroad.cabal b/railroad.cabal
--- a/railroad.cabal
+++ b/railroad.cabal
@@ -1,6 +1,6 @@
 cabal-version:      3.0
 name:               railroad
-version:            0.1.1.2
+version:            0.1.1.3
 license:            BSD-3-Clause
 license-file:       LICENSE
 author:             Frederik Kallstrup Mastratisi
diff --git a/src/Railroad.hs b/src/Railroad.hs
--- a/src/Railroad.hs
+++ b/src/Railroad.hs
@@ -97,7 +97,7 @@
   TooMany xs -> onTooMany xs
 
 
--- |  Non-empty is sucess state. Returns the collection as-is.
+-- |  Non-empty is success state. Returns the collection as-is.
 (?+) :: forall es e t a. (Error e :> es, Foldable t)
      => Eff es (t a) -> e -> Eff es (t a)
 (?+) action err = do
@@ -105,7 +105,7 @@
   if null xs then throwError_ err else pure xs
 
 
--- | Single element is sucess state.  Returns the single element
+-- | Single element is success state.  Returns the single element
 (?!) :: forall es e t a. (Error e :> es, Foldable t)
      => Eff es (t a) -> (CardinalityError (t a) -> e) -> Eff es a
 (?!) action toErr = do
@@ -128,5 +128,5 @@
      => Eff es (t a) -> ((t a) -> e) -> Eff es ()
 (?@) = (?∅)
 
-infixl 0 ??, ?, ??~, ?~, ?!, ?+, ?∅, ?@
+infixl  0 ??, ?, ??~, ?~, ?!, ?+, ?∅, ?@
 infixl 1 ?>
diff --git a/src/Railroad/MonadError.hs b/src/Railroad/MonadError.hs
--- a/src/Railroad/MonadError.hs
+++ b/src/Railroad/MonadError.hs
@@ -29,7 +29,7 @@
      => m a -> (CErr a -> e) -> m (CRes a)
 action ?? toErr = action >>= collapse toErr
 
--- | Collapses a structure using an error mapper.
+-- | Collapses a structure using a constant error.
 (?) :: forall m e a. (MonadError e m, Bifurcate a)
     => m a -> e -> m (CRes a)
 action ? err = action ?? const err
@@ -49,14 +49,14 @@
 (?~) :: forall m a. (Bifurcate a, Monad m) => m a -> CRes a -> m (CRes a)
 action ?~ defaultVal = action ??~ (const defaultVal)
 
--- |  Non-empty is sucess state. Returns the collection as-is.
+-- |  Non-empty is success state. Returns the collection as-is.
 (?+) :: forall m e t a. (MonadError e m, Foldable t)
      => m (t a) -> e -> m (t a)
 (?+) action err = do
   xs <- action
   if null xs then throwError err else pure xs
 
--- | Single element is sucess state.  Returns the single element
+-- | Single element is success state.  Returns the single element
 (?!) :: forall m e t a. (MonadError e m, Foldable t)
      => m (t a) -> (CardinalityError (t a) -> e) -> m a
 (?!) action toErr = do
@@ -72,9 +72,6 @@
 (?∅) action toErr = do
   xs <- action
   if null xs then pure () else throwError (toErr xs)
-
-
-
 
 -- | Non-unicode alias for `(?∅)`
 (?@) :: forall m e t a. (MonadError e m, Foldable t)