diff --git a/pkgs/by-name/mp/mpc/package.nix b/pkgs/by-name/mp/mpc/package.nix
index 2d1976123167..384f05f75c8e 100644
--- a/pkgs/by-name/mp/mpc/package.nix
+++ b/pkgs/by-name/mp/mpc/package.nix
@@ -34,6 +34,8 @@ stdenv.mkDerivation (finalAttrs: {
     python3Packages.sphinx
   ];
 
+  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin { NIX_LDFLAGS = "-liconv"; };
+
   postInstall = ''
     installShellCompletion --cmd mpc --bash $out/share/doc/mpc/contrib/mpc-completion.bash
   '';