diff --git a/hyperweb.cpp b/hyperweb.cpp
index 31b5dc48..a2195216 100644
--- a/hyperweb.cpp
+++ b/hyperweb.cpp
@@ -11,10 +11,13 @@
 #define CAP_SDLTTF 0
 #define CAP_SHMUP 0
 #define CAP_RUG 1
-#define CAP_ORIENTATION 1
 #define CAP_INV 0
 #define GLES_ONLY
 
+#ifndef CAP_ORIENTATION
+#define CAP_ORIENTATION 1
+#endif
+
 #ifdef FAKEWEB
 void mainloopiter();
 template<class A, class B, class C> void emscripten_set_main_loop(A a, B b, C c) { while(true) mainloopiter(); }