diff --git a/src/state.h b/src/state.h
index 49e28af..108b4f6 100644
--- a/src/state.h
+++ b/src/state.h
@@ -4,7 +4,7 @@
 
 #define WINDOW_WIDTH 1920
 #define WINDOW_HEIGHT 1080
-#define WINDOW_FLAGS SDL_WINDOW_RESIZABLE
+#define WINDOW_FLAGS SDL_WINDOW_RESIZABLE | SDL_WINDOW_OPENGL
 #define LINE_WIDTH 2.0f
 
 struct State