diff --git a/renderdoc/driver/vulkan/vk_core.cpp b/renderdoc/driver/vulkan/vk_core.cpp
index 2ad9d7b17..6296fcd2b 100644
--- a/renderdoc/driver/vulkan/vk_core.cpp
+++ b/renderdoc/driver/vulkan/vk_core.cpp
@@ -3340,8 +3340,8 @@ VkBool32 VKAPI_PTR WrappedVulkan::DebugUtilsCallbackStatic(
 
     while(c > pMessageId && *c >= '0' && *c <= '9')
     {
-      mult *= 10;
       messageCode += mult * int(*c - '0');
+      mult *= 10;
       c--;
     }
   }
diff --git a/util/test/demos/vk/vk_helpers.h b/util/test/demos/vk/vk_helpers.h
index 2759d45a1..161407d42 100644
--- a/util/test/demos/vk/vk_helpers.h
+++ b/util/test/demos/vk/vk_helpers.h
@@ -213,6 +213,27 @@ struct DebugReportCallbackCreateInfoEXT : public VkDebugReportCallbackCreateInfo
   operator const VkDebugReportCallbackCreateInfoEXT *() const { return this; }
 };
 
+struct DebugUtilsMessengerCreateInfoEXT : public VkDebugUtilsMessengerCreateInfoEXT
+{
+  DebugUtilsMessengerCreateInfoEXT(
+      PFN_vkDebugUtilsMessengerCallbackEXT callback, void *userData = NULL,
+      VkDebugUtilsMessageSeverityFlagsEXT severity = VK_DEBUG_UTILS_MESSAGE_SEVERITY_FLAG_BITS_MAX_ENUM_EXT,
+      VkDebugUtilsMessageTypeFlagsEXT type = VK_DEBUG_UTILS_MESSAGE_TYPE_GENERAL_BIT_EXT |
+                                             VK_DEBUG_UTILS_MESSAGE_TYPE_VALIDATION_BIT_EXT,
+      VkDebugUtilsMessengerCreateFlagsEXT flags = 0)
+  {
+    sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_MESSENGER_CREATE_INFO_EXT;
+    pNext = NULL;
+    this->flags = flags;
+    this->messageSeverity = severity;
+    this->messageType = type;
+    this->pfnUserCallback = callback;
+    this->pUserData = userData;
+  }
+
+  operator const VkDebugUtilsMessengerCreateInfoEXT *() const { return this; }
+};
+
 struct DeviceQueueCreateInfo : public VkDeviceQueueCreateInfo
 {
   DeviceQueueCreateInfo(uint32_t queueFamilyIndex, uint32_t queueCount,
diff --git a/util/test/demos/vk/vk_test.cpp b/util/test/demos/vk/vk_test.cpp
index a5805fb04..e6f7dd9ab 100644
--- a/util/test/demos/vk/vk_test.cpp
+++ b/util/test/demos/vk/vk_test.cpp
@@ -44,13 +44,12 @@
 #include "../linux/linux_window.h"
 #endif
 
-static VkBool32 VKAPI_PTR vulkanCallback(VkDebugReportFlagsEXT flags,
-                                         VkDebugReportObjectTypeEXT objectType, uint64_t object,
-                                         size_t location, int32_t messageCode,
-                                         const char *pLayerPrefix, const char *pMessage,
+static VkBool32 VKAPI_PTR vulkanCallback(VkDebugUtilsMessageSeverityFlagBitsEXT messageSeverity,
+                                         VkDebugUtilsMessageTypeFlagsEXT messageTypes,
+                                         const VkDebugUtilsMessengerCallbackDataEXT *pCallbackData,
                                          void *pUserData)
 {
-  TEST_WARN("Vulkan message: [%s] %s", pLayerPrefix, pMessage);
+  TEST_WARN("Vulkan message: [%s] %s", pCallbackData->pMessageIdName, pCallbackData->pMessage);
 
   return false;
 }
@@ -88,9 +87,9 @@ bool VulkanGraphicsTest::Init(int argc, char **argv)
 #endif
 
   if(debugDevice)
-    instExts.push_back(VK_EXT_DEBUG_REPORT_EXTENSION_NAME);
-
-  optInstExts.push_back(VK_EXT_DEBUG_UTILS_EXTENSION_NAME);
+    instExts.push_back(VK_EXT_DEBUG_UTILS_EXTENSION_NAME);
+  else
+    optInstExts.push_back(VK_EXT_DEBUG_UTILS_EXTENSION_NAME);
 
   std::vector<const char *> layers;
 
@@ -157,11 +156,11 @@ bool VulkanGraphicsTest::Init(int argc, char **argv)
 
   if(debugDevice)
   {
-    CHECK_VKR(vkCreateDebugReportCallbackEXT(
-        instance,
-        vkh::DebugReportCallbackCreateInfoEXT(
-            VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT, &vulkanCallback),
-        NULL, &debugReportCallback));
+    CHECK_VKR(vkCreateDebugUtilsMessengerEXT(
+        instance, vkh::DebugUtilsMessengerCreateInfoEXT(
+                      &vulkanCallback, NULL, VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT |
+                                                 VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT),
+        NULL, &debugUtilsMessenger));
   }
 
   std::vector<VkPhysicalDevice> physDevices;
@@ -463,8 +462,8 @@ VulkanGraphicsTest::~VulkanGraphicsTest()
     vkDestroyDevice(device, NULL);
   }
 
-  if(debugReportCallback)
-    vkDestroyDebugReportCallbackEXT(instance, debugReportCallback, NULL);
+  if(debugUtilsMessenger)
+    vkDestroyDebugUtilsMessengerEXT(instance, debugUtilsMessenger, NULL);
   if(surface)
     vkDestroySurfaceKHR(instance, surface, NULL);
 
diff --git a/util/test/demos/vk/vk_test.h b/util/test/demos/vk/vk_test.h
index 30e7989d1..307dc07d2 100644
--- a/util/test/demos/vk/vk_test.h
+++ b/util/test/demos/vk/vk_test.h
@@ -216,7 +216,7 @@ struct VulkanGraphicsTest : public GraphicsTest
   std::vector<VkFramebuffer> swapFramebuffers;
 
   // utilities
-  VkDebugReportCallbackEXT debugReportCallback;
+  VkDebugUtilsMessengerEXT debugUtilsMessenger;
   VkCommandPool cmdPool;
 
   // tracking object lifetimes