diff --git a/pkgs/by-name/cd/cdrdao/package.nix b/pkgs/by-name/cd/cdrdao/package.nix
index ca316c70d5a9..7267728d18ab 100644
--- a/pkgs/by-name/cd/cdrdao/package.nix
+++ b/pkgs/by-name/cd/cdrdao/package.nix
@@ -2,7 +2,6 @@
   lib,
   stdenv,
   fetchFromGitHub,
-  fetchpatch,
   autoreconfHook,
   pkg-config,
   libiconv,
@@ -40,6 +39,10 @@ stdenv.mkDerivation (finalAttrs: {
     libao
   ];
 
+  env = {
+    am_cv_func_iconv_works = "yes";
+  };
+
   hardeningDisable = [ "format" ];
 
   # we have glibc/include/linux as a symlink to the kernel headers,