diff --git a/include/villas/super_node.h b/include/villas/super_node.h
index 81ad888dc..7e4729ae3 100644
--- a/include/villas/super_node.h
+++ b/include/villas/super_node.h
@@ -42,4 +42,6 @@ struct lws_vhost * web_get_vhost(struct web *w);
 
 enum state web_get_state(struct web *w);
 
+#ifdef WITH_WEB
 int web_callback_on_writable(struct web *w, struct lws *wsi);
+#endif
diff --git a/lib/super_node.cpp b/lib/super_node.cpp
index 246a0ae3a..213eb95c7 100644
--- a/lib/super_node.cpp
+++ b/lib/super_node.cpp
@@ -620,8 +620,10 @@ extern "C" {
 		return ws->getState();
 	}
 
+#ifdef WITH_WEB
 	int web_callback_on_writable(struct web *w, struct lws *wsi)
 	{
 		return lws_callback_on_writable(wsi);
 	}
+#endif
 }