diff --git a/pkgs/applications/video/mplayer/default.nix b/pkgs/applications/video/mplayer/default.nix
index 880ea831f186..0fbfefa27198 100644
--- a/pkgs/applications/video/mplayer/default.nix
+++ b/pkgs/applications/video/mplayer/default.nix
@@ -176,6 +176,9 @@ stdenv.mkDerivation rec {
     echo CONFIG_MPEGAUDIODSP=yes >> config.mak
   '';
 
+  # Fixes compilation with newer versions of clang that make these warnings errors by default.
+  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-int-conversion -Wno-incompatible-function-pointer-types";
+
   NIX_LDFLAGS = with lib; toString (
        optional  fontconfigSupport "-lfontconfig"
     ++ optional  fribidiSupport "-lfribidi"