diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index fb0f3c30675c..a7a72f09cf84 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -1840,8 +1840,6 @@ self: super: {
     };
   };
 
-  phonetic-languages-phonetics-basics = appendPatch super.phonetic-languages-phonetics-basics ./patches/phonetic-languages-phonetics-basics-haddock.patch;
-
   # 2021-05-09: Restrictive bound on hspec-golden. Dep removed in newer versions.
   tomland = assert super.tomland.version == "1.3.2.0"; doJailbreak super.tomland;
 
diff --git a/pkgs/development/haskell-modules/patches/phonetic-languages-phonetics-basics-haddock.patch b/pkgs/development/haskell-modules/patches/phonetic-languages-phonetics-basics-haddock.patch
deleted file mode 100644
index 39c1f98298b3..000000000000
--- a/pkgs/development/haskell-modules/patches/phonetic-languages-phonetics-basics-haddock.patch
+++ /dev/null
@@ -1,46 +0,0 @@
-diff -ru phonetic-languages-phonetics-basics-0.5.1.0/Data/Phonetic/Languages/SpecificationsRead.hs phonetic-languages-phonetics-basics-0.5.1.0/Data/Phonetic/Languages/SpecificationsRead.hs
---- phonetic-languages-phonetics-basics-0.5.1.0/Data/Phonetic/Languages/SpecificationsRead.hs	2021-04-30 17:45:52.000000000 +0200
-+++ phonetic-languages-phonetics-basics-0.5.1.0/Data/Phonetic/Languages/SpecificationsRead.hs	2021-05-08 18:16:15.054951952 +0200
-@@ -1,11 +1,11 @@
---- |
---- Module      :  Data.Phonetic.Languages.SpecificationsRead
---- Copyright   :  (c) OleksandrZhabenko 2021
---- License     :  MIT
---- Stability   :  Experimental
---- Maintainer  :  olexandr543@yahoo.com
----
--{-| Provides functions to read data specifications for other modules from textual files.
-+{-|
-+Module      :  Data.Phonetic.Languages.SpecificationsRead
-+Copyright   :  (c) OleksandrZhabenko 2021
-+License     :  MIT
-+Stability   :  Experimental
-+Maintainer  :  olexandr543@yahoo.com
-+
-+Provides functions to read data specifications for other modules from textual files.
- -}
- 
- module Data.Phonetic.Languages.SpecificationsRead where
-diff -ru phonetic-languages-phonetics-basics-0.5.1.0/Main.hs phonetic-languages-phonetics-basics-0.5.1.0/Main.hs
---- phonetic-languages-phonetics-basics-0.5.1.0/Main.hs	2021-04-30 17:45:52.000000000 +0200
-+++ phonetic-languages-phonetics-basics-0.5.1.0/Main.hs	2021-05-08 18:14:06.344145599 +0200
-@@ -1,11 +1,11 @@
---- |
---- Module      :  Main
---- Copyright   :  (c) OleksandrZhabenko 2020-2021
---- License     :  MIT
---- Stability   :  Experimental
---- Maintainer  :  olexandr543@yahoo.com
----
--{-| Can be used to calculate the durations of the approximations of the phonemes
-+{-|
-+Module      :  Main
-+Copyright   :  (c) OleksandrZhabenko 2020-2021
-+License     :  MIT
-+Stability   :  Experimental
-+Maintainer  :  olexandr543@yahoo.com
-+
-+Can be used to calculate the durations of the approximations of the phonemes
- using some prepared text with its correct (at least mostly) pronunciation.
- The prepared text is located in the same directory and contains lines -the
- phonetic language word and its duration in seconds separated with whitespace.