diff --git a/test/bsdf_xml_file_serialization.unit.cpp b/test/bsdf_xml_file_serialization.unit.cpp
index 3d203b7..8bb9ac4 100644
--- a/test/bsdf_xml_file_serialization.unit.cpp
+++ b/test/bsdf_xml_file_serialization.unit.cpp
@@ -4,7 +4,7 @@
 
 #include "bsdfdata/Parser.hpp"
 
-#include "test/helper/BSDFXML/TestHelper.hpp"
+#include "test/helper/bsdfxml/TestHelper.hpp"
 
 TEST(BSDFXMLFileSerialization, Load2011SA1SmallMaterialCommaSeparated)
 {