diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 9b25bab93e4b..6ccf2a90537b 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -265,9 +265,6 @@ self: super: {
   termbox-bindings-c = appendConfigureFlags [
     "--ghc-option=-optc=-Wno-error=implicit-function-declaration"
   ] super.termbox-bindings-c;
-  libxml-sax = appendConfigureFlags [
-    "--ghc-option=-optc=-Wno-error=implicit-function-declaration"
-  ] super.libxml-sax;
 
   # There are numerical tests on random data, that may fail occasionally
   lapack = dontCheck super.lapack;