diff --git a/include/upnp/mapping.h b/include/upnp/mapping.h
index ebcbdaa..19e6421 100644
--- a/include/upnp/mapping.h
+++ b/include/upnp/mapping.h
@@ -21,7 +21,7 @@
 
 #pragma once
 
-#include "ip_utils.h"
+#include "../ip_utils.h"
 
 #include <map>
 #include <string>