diff --git a/renderdoc/driver/vulkan/wrappers/vk_device_funcs.cpp b/renderdoc/driver/vulkan/wrappers/vk_device_funcs.cpp
index e1f42b064..1217da99e 100644
--- a/renderdoc/driver/vulkan/wrappers/vk_device_funcs.cpp
+++ b/renderdoc/driver/vulkan/wrappers/vk_device_funcs.cpp
@@ -4172,14 +4172,6 @@ bool WrappedVulkan::Serialise_vkCreateDevice(SerialiserType &ser, VkPhysicalDevi
     createInfo.enabledLayerCount = 0;
     createInfo.ppEnabledLayerNames = NULL;
 
-    rdcarray<const char *> extArray;
-    extArray.resize(Extensions.size());
-    for(size_t i = 0; i < Extensions.size(); i++)
-      extArray[i] = Extensions[i].c_str();
-
-    createInfo.enabledExtensionCount = (uint32_t)extArray.size();
-    createInfo.ppEnabledExtensionNames = extArray.data();
-
     byte *tempMem = GetTempMemory(GetNextPatchSize(createInfo.pNext));
 
     UnwrapNextChain(m_State, "VkDeviceCreateInfo", tempMem, (VkBaseInStructure *)&createInfo);
@@ -4198,6 +4190,14 @@ bool WrappedVulkan::Serialise_vkCreateDevice(SerialiserType &ser, VkPhysicalDevi
     NVAftermath_Init();
     NVAftermath_EnableVK(supportedExtensions, Extensions, &createInfo.pNext);
 
+    rdcarray<const char *> extArray;
+    extArray.resize(Extensions.size());
+    for(size_t i = 0; i < Extensions.size(); i++)
+      extArray[i] = Extensions[i].c_str();
+
+    createInfo.enabledExtensionCount = (uint32_t)extArray.size();
+    createInfo.ppEnabledExtensionNames = extArray.data();
+
     vkr = GetDeviceDispatchTable(NULL)->CreateDevice(Unwrap(physicalDevice), &createInfo, NULL,
                                                      &device);