diff --git a/single_include/inja/inja.hpp b/single_include/inja/inja.hpp
index 5772128..0da6be5 100644
--- a/single_include/inja/inja.hpp
+++ b/single_include/inja/inja.hpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2019 Pantor. All rights reserved.
 
-#ifndef INCLUDE_INJA_INJA_HPP_s
+#ifndef INCLUDE_INJA_INJA_HPP_
 #define INCLUDE_INJA_INJA_HPP_
 
 #include <functional>