diff --git a/Cabal/Distribution/FieldGrammar/Parsec.hs b/Cabal/Distribution/FieldGrammar/Parsec.hs
index 45a58079140d7e91a24f5c180c971e679afb07b3..7b712e33448af6dbe9ec2567c05e1b1d58c594d7 100644
--- a/Cabal/Distribution/FieldGrammar/Parsec.hs
+++ b/Cabal/Distribution/FieldGrammar/Parsec.hs
@@ -266,7 +266,7 @@ instance FieldGrammar ParsecFieldGrammar where
                 for_ (Map.toList unknownFields) $ \(name, fields) ->
                     for_ fields $ \(MkNamelessField pos _) ->
                         parseWarning pos PWTUnknownField $
-                            "The field " <> show name <> " is available only since the Cabal specification version " ++ showCabalSpecVersion vs ++ "."
+                            "The field " <> show name <> " is available only since the Cabal specification version " ++ showCabalSpecVersion vs ++ ". This field will be ignored."
 
                 pure def
 
diff --git a/Cabal/tests/ParserTests/regressions/multiple-libs-2.check b/Cabal/tests/ParserTests/regressions/multiple-libs-2.check
index c9d75918dc64e3b0a92049dcef7c51d155b2eb8a..a244e2b89b7c89cfd19ab62241fc37cffb82617f 100644
--- a/Cabal/tests/ParserTests/regressions/multiple-libs-2.check
+++ b/Cabal/tests/ParserTests/regressions/multiple-libs-2.check
@@ -1,4 +1,4 @@
-multiple-libs-2.cabal:17:3: The field "visibility" is available only since the Cabal specification version 3.0.
+multiple-libs-2.cabal:17:3: The field "visibility" is available only since the Cabal specification version 3.0. This field will be ignored.
 No 'category' field.
 No 'maintainer' field.
 No 'description' field.
diff --git a/Cabal/tests/ParserTests/regressions/multiple-libs-2.format b/Cabal/tests/ParserTests/regressions/multiple-libs-2.format
index c5e9321112d4bc4a0a0f8f57ff9da0af5892c009..aba24b3c2a8417c1a767dea6ca469221ed958700 100644
--- a/Cabal/tests/ParserTests/regressions/multiple-libs-2.format
+++ b/Cabal/tests/ParserTests/regressions/multiple-libs-2.format
@@ -1,4 +1,4 @@
-multiple-libs-2.cabal:17:3: The field "visibility" is available only since the Cabal specification version 3.0.
+multiple-libs-2.cabal:17:3: The field "visibility" is available only since the Cabal specification version 3.0. This field will be ignored.
 cabal-version: 2.0
 name:          multiple-libs
 version:       0
diff --git a/Cabal/tests/ParserTests/regressions/wl-pprint-indef.format b/Cabal/tests/ParserTests/regressions/wl-pprint-indef.format
index 407402ec7327504431720fb446e191f4deb526c8..c2bcddfcbcbfc6b240b694b04908d7e70ba89504 100644
--- a/Cabal/tests/ParserTests/regressions/wl-pprint-indef.format
+++ b/Cabal/tests/ParserTests/regressions/wl-pprint-indef.format
@@ -1,6 +1,6 @@
-wl-pprint-indef.cabal:28:3: The field "mixins" is available only since the Cabal specification version 2.0.
-wl-pprint-indef.cabal:27:3: The field "signatures" is available only since the Cabal specification version 2.0.
-wl-pprint-indef.cabal:23:3: The field "mixins" is available only since the Cabal specification version 2.0.
+wl-pprint-indef.cabal:28:3: The field "mixins" is available only since the Cabal specification version 2.0. This field will be ignored.
+wl-pprint-indef.cabal:27:3: The field "signatures" is available only since the Cabal specification version 2.0. This field will be ignored.
+wl-pprint-indef.cabal:23:3: The field "mixins" is available only since the Cabal specification version 2.0. This field will be ignored.
 cabal-version: >=1.6
 name:          wl-pprint-indef
 version:       1.2