diff --git a/Source/src/scene/SceneContent.h b/Source/src/scene/SceneContent.h
new file mode 100644
index 00000000..ec6cd0c9
--- /dev/null
+++ b/Source/src/scene/SceneContent.h
@@ -0,0 +1,5 @@
+#pragma once
+
+#include <osgEarth/SpatialReference>
+
+extern const osgEarth::SpatialReference* g_srs_;