diff --git a/Formula/irrlicht.rb b/Formula/irrlicht.rb
index b6b7864097..e4d79f60fc 100644
--- a/Formula/irrlicht.rb
+++ b/Formula/irrlicht.rb
@@ -1,28 +1,12 @@
 class Irrlicht < Formula
   desc "Realtime 3D engine"
   homepage "http://irrlicht.sourceforge.net/"
+  url "https://downloads.sourceforge.net/irrlicht/irrlicht-1.8.3.zip"
+  sha256 "9e7be44277bf2004d73580a8585e7bd3c9ce9a3c801691e4f4aed030ac68931c"
   head "https://irrlicht.svn.sourceforge.net/svnroot/irrlicht/trunk"
-  url "https://downloads.sourceforge.net/irrlicht/irrlicht-1.8.1.zip"
-  sha256 "814bb90116d5429449ba1d169e2cbff881c473b7eada4c2447132bc4f4a6e97b"
-
-  # may be removed when https://sourceforge.net/p/irrlicht/patches/297/ applied
-  head do
-    patch do
-      url "https://gist.githubusercontent.com/neoascetic/7487c936a3c5858ad762/raw/4f572fdca4cd7a3ae4bb3893d50821cee48e3236/trunk.diff"
-      sha256 "df3ea90cfaec1fc2887a2335706bb58b0ccca6258ddb2878f1e159086a3e1abf"
-    end
-  end
-
-  stable do
-    patch do
-      url "https://gist.githubusercontent.com/neoascetic/7487c936a3c5858ad762/raw/2e3ab944c43357d705e270a99a5cd7d1b7e033c1/1.8.1.diff"
-      sha256 "78f06879c48ad8d87a2790e75f76df4027ae9ab4f89e5d52bedf3778a1d35d77"
-    end
-  end
 
   bottle do
     cellar :any_skip_relocation
-    revision 1
     sha256 "ac38d1aa91367ff3cbf61845028e86547b51803d83ac627653d959d2608ee4d1" => :el_capitan
     sha256 "f3e6427bc2499611b12b5babb907153fdd63c478d9745e59821958644e02f915" => :yosemite
     sha256 "4ef8e3d8f22ed7114223f89b6bc286c3fa9cadb9135d274265f2dce396522d27" => :mavericks
@@ -35,9 +19,12 @@ class Irrlicht < Formula
     xcodebuild "-project", "source/Irrlicht/MacOSX/MacOSX.xcodeproj",
                "-configuration", "Release",
                "-target", "libIrrlicht.a",
-               "SYMROOT=build",
-               "-sdk", "macosx#{MacOS.version}"
+               "SYMROOT=build"
     lib.install "source/Irrlicht/MacOSX/build/Release/libIrrlicht.a"
     include.install "include" => "irrlicht"
   end
+
+  test do
+    assert_match "x86_64", shell_output("lipo -info #{lib}/libIrrlicht.a")
+  end
 end