diff --git a/aegisub/src/gl_wrap.cpp b/aegisub/src/gl_wrap.cpp
index f2aa395f8..d6d28e8f3 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 5df711cb1..d2cfae86e 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 75fc87b59..f6eb762e7 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"