diff --git a/renderdoc/driver/vulkan/wrappers/vk_get_funcs.cpp b/renderdoc/driver/vulkan/wrappers/vk_get_funcs.cpp
index b77170194..49faee91c 100644
--- a/renderdoc/driver/vulkan/wrappers/vk_get_funcs.cpp
+++ b/renderdoc/driver/vulkan/wrappers/vk_get_funcs.cpp
@@ -61,7 +61,13 @@ VkResult WrappedVulkan::vkGetPhysicalDeviceProperties(
     VkPhysicalDevice                            physicalDevice,
     VkPhysicalDeviceProperties*                 pProperties)
 {
-	return ObjDisp(physicalDevice)->GetPhysicalDeviceProperties(Unwrap(physicalDevice), pProperties);
+	VkResult ret = ObjDisp(physicalDevice)->GetPhysicalDeviceProperties(Unwrap(physicalDevice), pProperties);
+	
+	// assign a random UUID, so that we get SPIR-V instead of cached pipeline data.
+	srand((unsigned int)pProperties);
+	for(int i=0; i < VK_UUID_LENGTH; i++) pProperties->pipelineCacheUUID[i] = (rand()>>6)&0xff;
+
+	return ret;
 }
 
 VkResult WrappedVulkan::vkGetPhysicalDeviceQueueCount(