diff --git a/src/guisan/include/guisan/opengl/openglimage.hpp b/src/guisan/include/guisan/opengl/openglimage.hpp
index 727f1382..7a41c857 100644
--- a/src/guisan/include/guisan/opengl/openglimage.hpp
+++ b/src/guisan/include/guisan/opengl/openglimage.hpp
@@ -68,7 +68,7 @@
 #if defined (__APPLE__)
 #include <OpenGL/gl.h>
 #else
-#include <GL/gl.h>
+#include <SDL2/SDL_opengl.h>
 #endif
 
 #include <string>
diff --git a/src/guisan/src/opengl/openglgraphics.cpp b/src/guisan/src/opengl/openglgraphics.cpp
index b6dd8ffd..9c2ae3e9 100644
--- a/src/guisan/src/opengl/openglgraphics.cpp
+++ b/src/guisan/src/opengl/openglgraphics.cpp
@@ -68,7 +68,7 @@
 #if defined(__APPLE__)
 #include <OpenGL/gl.h>
 #else
-#include <GL/gl.h>
+#include <SDL2/SDL_opengl.h>
 #endif
 
 #include "guisan/exception.hpp"