diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index b216764ff319..fd6d521369f1 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -938,9 +938,6 @@ self: super: {
     librarySystemDepends = (drv.librarySystemDepends or []) ++ [ pkgs.ncurses ];
   });
 
-  # https://github.com/Gabriel439/Haskell-Morte-Library/issues/32
-  morte = super.morte.override { alex = self.alex_3_1_4; };
-
   # https://github.com/mainland/language-c-quote/issues/57
   language-c-quote = super.language-c-quote.override { alex = self.alex_3_1_4; };
 }