diff --git a/Common/MVKOSExtensions.mm b/Common/MVKOSExtensions.mm
index 8d33f3d4..0a45aad9 100644
--- a/Common/MVKOSExtensions.mm
+++ b/Common/MVKOSExtensions.mm
@@ -134,7 +134,11 @@ uint64_t mvkGetUsedMemorySize() {
 	task_vm_info_data_t task_vm_info;
 	mach_msg_type_number_t task_size = TASK_VM_INFO_COUNT;
 	if (task_info(mach_task_self(), TASK_VM_INFO, (task_info_t)&task_vm_info, &task_size) == KERN_SUCCESS) {
+#ifdef TASK_VM_INFO_REV3_COUNT	// check for rev3 version of task_vm_info
+		return task_vm_info.ledger_tag_graphics_footprint;
+#else
 		return task_vm_info.phys_footprint;
+#endif
 	}
 	return 0;
 }
diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
index af016e51..be729b17 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
@@ -1650,12 +1650,12 @@ VkResult MVKPhysicalDevice::getMemoryProperties(VkPhysicalDeviceMemoryProperties
 				auto* budgetProps = (VkPhysicalDeviceMemoryBudgetPropertiesEXT*)next;
 				mvkClear(budgetProps->heapBudget, VK_MAX_MEMORY_HEAPS);
 				mvkClear(budgetProps->heapUsage, VK_MAX_MEMORY_HEAPS);
-				budgetProps->heapBudget[0] = (VkDeviceSize)getRecommendedMaxWorkingSetSize();
-				budgetProps->heapUsage[0] = (VkDeviceSize)getCurrentAllocatedSize();
 				if (!getHasUnifiedMemory()) {
 					budgetProps->heapBudget[1] = (VkDeviceSize)mvkGetAvailableMemorySize();
 					budgetProps->heapUsage[1] = (VkDeviceSize)mvkGetUsedMemorySize();
 				}
+				budgetProps->heapBudget[0] = (VkDeviceSize)getRecommendedMaxWorkingSetSize();
+				budgetProps->heapUsage[0] = (VkDeviceSize)getCurrentAllocatedSize() - budgetProps->heapUsage[1];
 				break;
 			}
 			default: