diff --git a/engine/bullet-native-build.txt b/engine/bullet-native-build.txt
index ff84708d8..dfc953e73 100644
--- a/engine/bullet-native-build.txt
+++ b/engine/bullet-native-build.txt
@@ -24,6 +24,7 @@ WINDOWS
 
 Mac OSX
 - Install XCode: http://developer.apple.com/ (or via the App Store)
+- Install the "Command Line Tools" from inside XCode
 - Install http://www.macports.org
 - Install cmake via macports, in the Terminal type:
 > sudo port install cmake
diff --git a/engine/nbproject/bullet-native.properties b/engine/nbproject/bullet-native.properties
index fdb723719..4828e24a0 100644
--- a/engine/nbproject/bullet-native.properties
+++ b/engine/nbproject/bullet-native.properties
@@ -8,14 +8,15 @@ bullet.library.version=0.9
 ndk.dir=/opt/android-ndk-r7
 
 # change if bullet version changes
-bullet.folder=../bullet-2.79
-bullet.download=http://bullet.googlecode.com/files/bullet-2.79-rev2440.zip
+bullet.folder=../bullet-2.80-rev2531
+bullet.download=http://bullet.googlecode.com/files/bullet-2.80-rev2531.zip
 
 # compile options
 bullet.compile.debug=false
 # native library compilation options
 bullet.osx.compiler=g++
-bullet.osx.syslibroot=/Developer/SDKs/MacOSX10.6.sdk
+bullet.osx.syslibroot=/Applications/XCode/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk
+#/Developer/SDKs/MacOSX10.6.sdk
 # change this to msvc for MS Visual Studio compiler
 bullet.windows.compiler=g++
 bullet.linux.compiler=g++