diff --git a/samples/api/hpp_hello_triangle/hpp_hello_triangle.cpp b/samples/api/hpp_hello_triangle/hpp_hello_triangle.cpp
index d487e557b..11f2bf4cc 100644
--- a/samples/api/hpp_hello_triangle/hpp_hello_triangle.cpp
+++ b/samples/api/hpp_hello_triangle/hpp_hello_triangle.cpp
@@ -35,7 +35,7 @@ VKAPI_ATTR vk::Bool32 VKAPI_CALL debug_utils_messenger_callback(vk::DebugUtilsMe
                                                                 void                                         *user_data)
 {
 	// Log debug message
-	std::string message = std::format("Debug callback {}\n{}: {}", vk::to_string(message_type), callback_data->pMessageIdName, callback_data->pMessage);
+	std::string message = fmt::format("Debug callback {}\n{}: {}", vk::to_string(message_type), callback_data->pMessageIdName, callback_data->pMessage);
 	switch (message_severity)
 	{
 		case vk::DebugUtilsMessageSeverityFlagBitsEXT::eVerbose: