diff --git a/include/Nazara/Core/StringExt.inl b/include/Nazara/Core/StringExt.inl
index 5631d4c7d..dab1f668f 100644
--- a/include/Nazara/Core/StringExt.inl
+++ b/include/Nazara/Core/StringExt.inl
@@ -2,6 +2,7 @@
 // This file is part of the "Nazara Engine - Core module"
 // For conditions of distribution and use, see copyright notice in Config.hpp
 
+#include <Nazara/Core/Error.hpp>
 #include <algorithm>
 #include <cctype>
 #include <cstring>