diff --git a/parsley/shared/src/main/scala/parsley/errors/combinator.scala b/parsley/shared/src/main/scala/parsley/errors/combinator.scala
index f586c0e3f..4f6876560 100644
--- a/parsley/shared/src/main/scala/parsley/errors/combinator.scala
+++ b/parsley/shared/src/main/scala/parsley/errors/combinator.scala
@@ -5,8 +5,6 @@
  */
 package parsley.errors
 
-import scala.annotation.nowarn
-
 import parsley.Parsley
 
 import parsley.internal.deepembedding.{frontend, singletons}
@@ -496,7 +494,7 @@ object combinator {
           * @return a parser which returns the result of this parser applied to pf, if possible.
           * @see [[parsley.Parsley.collect `collect`]], which is a basic version of this same combinator with no customised error message.
           * @see [[guardAgainst `guardAgainst`]], which is similar to `collectMsg`, except it does not transform the data.
-          * @see [[filterWithMsg `filterWithMsg`]], which is similar to `collectMsg`, except uses a `A => Either[Seq[String], B]` function.
+          * @see [[mapFilterMsg `mapFilterMsg`]], which is similar to `collectMsg`, except uses a `A => Either[Seq[String], B]` function.
           * @note $autoAmend
           * @note implemented in terms of [[collectWith `collectWith`]].
           * @group filter
@@ -536,7 +534,7 @@ object combinator {
         def mapFilterMsg[B](f: A => Either[Seq[String], B]): Parsley[B] = {
             this.mapFilterWith(new SpecializedGen[A] {
                 override def messages(x: A) = {
-                    val Left(errs) = f(x): @nowarn
+                    val Left(errs) = f(x): @unchecked
                     errs
                 }
             })(x => f(x).toOption)