diff --git a/pkgs/tools/video/swfmill/default.nix b/pkgs/tools/video/swfmill/default.nix
index c93534bf1a20..8e6d0baf7e72 100644
--- a/pkgs/tools/video/swfmill/default.nix
+++ b/pkgs/tools/video/swfmill/default.nix
@@ -14,11 +14,14 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ libxslt freetype libpng libxml2 ];
 
+  # fatal error: 'libxml/xpath.h' file not found
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-I${libxml2.dev}/include/libxml2";
+
   meta = {
     description = "An xml2swf and swf2xml processor with import functionalities";
     homepage = "http://swfmill.org";
     license = lib.licenses.gpl2;
-    platforms = lib.platforms.linux;
+    platforms = lib.platforms.unix;
     mainProgram = "swfmill";
   };
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e59de08224d3..e7b3786a4e48 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -20202,7 +20202,7 @@ with pkgs;
 
   c3c = callPackage ../development/compilers/c3c { };
 
-  swfmill = callPackage ../tools/video/swfmill { stdenv = gcc10StdenvCompat; };
+  swfmill = callPackage ../tools/video/swfmill { };
 
   swftools = callPackage ../tools/video/swftools {
     stdenv = gccStdenv;