diff --git a/include/Nazara/Core/StringExt.inl b/include/Nazara/Core/StringExt.inl
index 71a04ebff..0ab5c0cff 100644
--- a/include/Nazara/Core/StringExt.inl
+++ b/include/Nazara/Core/StringExt.inl
@@ -60,7 +60,10 @@ namespace Nz
 				return false;
 		}
 
-		return func(str.substr(previousPos));
+		if (previousPos < str.size())
+			return func(str.substr(previousPos));
+		else
+			return true;
 	}
 
 	template<typename F>