diff --git a/include/spdk/env.h b/include/spdk/env.h
index 921e32329..5bd4ff14c 100644
--- a/include/spdk/env.h
+++ b/include/spdk/env.h
@@ -61,6 +61,9 @@ struct spdk_env_opts {
 	int	 		master_core;
 	int			mem_size;
 	bool			no_pci;
+
+	/** Opaque context for use of the env implementation. */
+	void			*env_context;
 };
 
 /**