diff --git a/.travis.yml b/.travis.yml
index 9fcb1b19..e1893939 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,7 +14,6 @@ matrix:
             - libc6-i386
             - libcurl4-openssl-dev:i386
             - libpng12-dev:i386
-            - libgl1-mesa-dev:i386
 
     - os: osx
       compiler: clang
diff --git a/main/source/particles/opengl.cpp b/main/source/particles/opengl.cpp
index 10cf849e..38e7f7a8 100644
--- a/main/source/particles/opengl.cpp
+++ b/main/source/particles/opengl.cpp
@@ -11,10 +11,15 @@
 #include <windows.h>
 #include <GL/gl.h>
 #else
-#include <OpenGL/gl.h>
 #define NULL 0
 #endif
 
+#ifdef __APPLE__
+#include <OpenGL/gl.h>
+#else
+#include <GL/gl.h>
+#endif
+
 // XXX #include <iostream.h>
 
 // Emit OpenGL calls to draw the particles. These are drawn with