diff --git a/interface/CMakeLists.txt b/interface/CMakeLists.txt
index 118c10ba82..30f89bfe34 100644
--- a/interface/CMakeLists.txt
+++ b/interface/CMakeLists.txt
@@ -5,8 +5,10 @@ project(interface)
 if (APPLE)
     set(CMAKE_EXE_LINKER_FLAGS "-framework CoreAudio -framework AudioToolbox -framework AudioUnit -framework CoreServices -framework Carbon")
     set(GLUT_HEADER_INCLUDE "<GLUT/glut.h>")
+    set(GL_EXT_INCLUDE "<OpenGL/glext.h>")
 else (APPLE)
-    set(GLUT_HEADER_INCLUDE "<GL/glut.h>")
+    set(GLUT_HEADER_INCLUDE "<GL/gl.h>")
+    set(GL_EXT_INCLUDE "<GL/glext.h>")
 endif (APPLE)
 
 configure_file(InterfaceConfig.h.in ${PROJECT_BINARY_DIR}/includes/InterfaceConfig.h)
diff --git a/interface/InterfaceConfig.h.in b/interface/InterfaceConfig.h.in
index 435c3eef7a..0084216b1e 100644
--- a/interface/InterfaceConfig.h.in
+++ b/interface/InterfaceConfig.h.in
@@ -9,6 +9,8 @@
 #ifndef interface__InterfaceConfig__
 #define interface__InterfaceConfig__
 
+#define GL_GLEXT_PROTOTYPES 1
 #include @GLUT_HEADER_INCLUDE@
+#include @GL_EXT_INCLUDE@
 
 #endif
diff --git a/interface/src/Cloud.cpp b/interface/src/Cloud.cpp
index ef978566e2..05d4ce199b 100644
--- a/interface/src/Cloud.cpp
+++ b/interface/src/Cloud.cpp
@@ -57,9 +57,9 @@ void Cloud::render() {
     glPointSize( maxSize );
 
     
-    glPointParameterfv( GL_POINT_DISTANCE_ATTENUATION, particle_attenuation_quadratic );
-    glPointParameterf( GL_POINT_SIZE_MAX, maxSize );
-    glPointParameterf( GL_POINT_SIZE_MIN, 0.001f );
+    glPointParameterfvARB( GL_POINT_DISTANCE_ATTENUATION_ARB, particle_attenuation_quadratic );
+    glPointParameterfARB( GL_POINT_SIZE_MAX_ARB, maxSize );
+    glPointParameterfARB( GL_POINT_SIZE_MIN_ARB, 0.001f );
     
     glTexEnvf( GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE );
     glEnable( GL_POINT_SPRITE_ARB );
diff --git a/interface/src/Util.cpp b/interface/src/Util.cpp
index e42d63d684..b6ea560eff 100644
--- a/interface/src/Util.cpp
+++ b/interface/src/Util.cpp
@@ -95,7 +95,7 @@ void render_vector(glm::vec3 * vec)
     glEnd();
     float particle_attenuation_quadratic[] =  { 0.0f, 0.0f, 2.0f }; // larger Z = smaller particles
 
-    glPointParameterfv( GL_POINT_DISTANCE_ATTENUATION, particle_attenuation_quadratic );
+    glPointParameterfvARB( GL_POINT_DISTANCE_ATTENUATION_ARB, particle_attenuation_quadratic );
     
     glEnable(GL_POINT_SMOOTH);
     glPointSize(10.0);
diff --git a/interface/src/main.cpp b/interface/src/main.cpp
index b6533c9b7f..8a64b7e169 100644
--- a/interface/src/main.cpp
+++ b/interface/src/main.cpp
@@ -598,7 +598,7 @@ void display(void)
         Audio::render(WIDTH, HEIGHT);
 
         //drawvec3(100, 100, 0.15, 0, 1.0, 0, myHead.getPos(), 0, 1, 0);
-        glPointParameterfv( GL_POINT_DISTANCE_ATTENUATION, pointer_attenuation_quadratic );
+        glPointParameterfvARB( GL_POINT_DISTANCE_ATTENUATION_ARB, pointer_attenuation_quadratic );
 
 //        myFinger.render();