diff --git a/openVulkanoCpp/Base/Utils.hpp b/openVulkanoCpp/Base/Utils.hpp
index 675d45c..f9a8a78 100644
--- a/openVulkanoCpp/Base/Utils.hpp
+++ b/openVulkanoCpp/Base/Utils.hpp
@@ -159,19 +159,19 @@ namespace OpenVulkano
 
 		static void ToLower(std::string& str)
 		{
-			std::transform(str.begin(), str.end(), str.begin(), [](char c) { std::tolower(c); });
+			std::transform(str.begin(), str.end(), str.begin(), [](char c) { return std::tolower(c); });
 		}
 
 		static void ToLower(const std::string& str, char* dest)
 		{
-			std::transform(str.begin(), str.end(), dest, [](char c) { std::tolower(c); });
+			std::transform(str.begin(), str.end(), dest, [](char c) { return std::tolower(c); });
 		}
 
 		static std::string ToLower(const std::string& str)
 		{
 			std::string dest;
 			dest.reserve(str.size());
-			std::transform(str.begin(), str.end(), dest.begin(), [](char c) { std::tolower(c); });
+			std::transform(str.begin(), str.end(), dest.begin(), [](char c) { return std::tolower(c); });
 			return dest;
 		}