diff --git a/OpenXLSX/headers/XLXmlParser.hpp b/OpenXLSX/headers/XLXmlParser.hpp
index 6c81b2c..6fa1bda 100644
--- a/OpenXLSX/headers/XLXmlParser.hpp
+++ b/OpenXLSX/headers/XLXmlParser.hpp
@@ -49,7 +49,7 @@ YM      M9  MM    MM MM       MM    MM   d'  `MM.    MM            MM   d'  `MM.
 #include <memory> // shared_ptr
 
 // ===== pugixml.hpp needed for pugi::impl::xml_memory_page_type_mask, pugi::xml_node_type, pugi::char_t, pugi::node_element, pugi::xml_node, pugi::xml_attribute, pugi::xml_document
-#include <external/pugixml/pugixml.hpp> // not sure why the full include path is needed within the header file
+#include <pugixml.hpp>
 #include "XLException.hpp"
 
 namespace { // anonymous namespace to define constants / functions that shall not be exported from this module