diff --git a/retrace/glws_waffle.cpp b/retrace/glws_waffle.cpp
index 6b34eb04..633381ce 100644
--- a/retrace/glws_waffle.cpp
+++ b/retrace/glws_waffle.cpp
@@ -130,7 +130,7 @@ init(void)
     waffle_platform = WAFFLE_PLATFORM_CGL
 #elif defined(_WIN32)
     waffle_platform = WAFFLE_PLATFORM_WGL
-#else
+#elif defined(HAVE_X11)
     waffle_platform = WAFFLE_PLATFORM_GLX;
 
     const char *waffle_platform_name = getenv("WAFFLE_PLATFORM");
@@ -148,6 +148,8 @@ init(void)
             exit(1);
         }
     }
+#else
+    waffle_platform = WAFFLE_PLATFORM_NULL;
 #endif
 
     Attributes<int32_t> waffle_init_attrib_list;