diff --git a/aegisub/src/gl_wrap.cpp b/aegisub/src/gl_wrap.cpp
index f2aa395f852055aad6caa336067fa6d0b37f094d..d6d28e8f39301a9ed3a6ea7186af131c5ad47ec3 100644
--- a/aegisub/src/gl_wrap.cpp
+++ b/aegisub/src/gl_wrap.cpp
@@ -31,11 +31,9 @@
 
 #ifdef HAVE_OPENGL_GL_H
 #include <OpenGL/gl.h>
-#include <OpenGL/glu.h>
 #include <OpenGL/glext.h>
 #else
 #include <GL/gl.h>
-#include <GL/glu.h>
 #include "gl/glext.h"
 #endif
 #endif
diff --git a/aegisub/src/video_display.cpp b/aegisub/src/video_display.cpp
index 5df711cb16989d7ae41b2f3e185e6301c2fbda5d..d2cfae86e80ae4c777cabe58957a1e518042c10b 100644
--- a/aegisub/src/video_display.cpp
+++ b/aegisub/src/video_display.cpp
@@ -50,10 +50,8 @@
 
 #ifdef HAVE_OPENGL_GL_H
 #include <OpenGL/gl.h>
-#include <OpenGL/glu.h>
 #else
 #include <GL/gl.h>
-#include <GL/glu.h>
 #endif
 
 #include "video_display.h"
diff --git a/aegisub/src/video_out_gl.cpp b/aegisub/src/video_out_gl.cpp
index 75fc87b595dbdc40be2fdc45f11eef804b03b5cd..f6eb762e7f0a7e6d239c3954bd0e5efdf0c706dd 100644
--- a/aegisub/src/video_out_gl.cpp
+++ b/aegisub/src/video_out_gl.cpp
@@ -46,10 +46,8 @@
 // These must be included before local headers.
 #ifdef HAVE_OPENGL_GL_H
 #include <OpenGL/gl.h>
-#include <OpenGL/glu.h>
 #else
 #include <GL/gl.h>
-#include <GL/glu.h>
 #endif
 
 #include "video_out_gl.h"