diff --git a/CMakeLists.txt b/CMakeLists.txt
index 09dd0fd5..e58e1fd4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -259,9 +259,7 @@ if (_GLFW_COCOA AND _GLFW_NSGL)
     # Universal build
     if (GLFW_BUILD_UNIVERSAL)
         message(STATUS "Building GLFW as Universal Binaries")
-        set(CMAKE_OSX_ARCHITECTURES ppc;i386;ppc64;x86_64)
-        set(CMAKE_OSX_SYSROOT /Developer/SDKs/MacOSX10.5.sdk)
-        set(CMAKE_C_FLAGS "-mmacosx-version-min=10.5") 
+        set(CMAKE_OSX_ARCHITECTURES i386;x86_64)
     else()
         message(STATUS "Building GLFW only for the native architecture")
     endif()