diff --git a/README.md b/README.md
index 3f133b7..ab01f9e 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,7 @@ implements the following extensions:
 * Instance extensions
   * VK_KHR_get_surface_capabilities2
   * VK_EXT_surface_maintenance1
+  * VK_KHR_surface_maintenance1
 * Device extensions
   * VK_KHR_shared_presentable_image
   * VK_EXT_image_compression_control_swapchain
diff --git a/layer/VkLayer_window_system_integration.json b/layer/VkLayer_window_system_integration.json
index 41c6e13..850eb89 100644
--- a/layer/VkLayer_window_system_integration.json
+++ b/layer/VkLayer_window_system_integration.json
@@ -17,7 +17,8 @@
             {"name" : "VK_KHR_surface", "spec_version" : "25"},
             {"name" : "VK_KHR_display", "spec_version" : "23"},
             {"name" : "VK_KHR_get_surface_capabilities2", "spec_version" : "1"},
-            {"name" : "VK_EXT_surface_maintenance1", "spec_version" : "1"}
+            {"name" : "VK_EXT_surface_maintenance1", "spec_version" : "1"},
+            {"name" : "VK_KHR_surface_maintenance1", "spec_version" : "1"}
         ],
         "device_extensions": [
             {"name": "VK_KHR_shared_presentable_image", "spec_version": "1", "entrypoints": ["vkGetSwapchainStatusKHR"]},