diff --git a/hwc2_device/HwcDisplay.h b/hwc2_device/HwcDisplay.h
index acefff8..54e4239 100644
--- a/hwc2_device/HwcDisplay.h
+++ b/hwc2_device/HwcDisplay.h
@@ -45,7 +45,8 @@
     kNone,
     kBadConfig,
     kSeamlessNotAllowed,
-    kSeamlessNotPossible
+    kSeamlessNotPossible,
+    kConfigFailed,
   };
 
   HwcDisplay(hwc2_display_t handle, HWC2::DisplayType type, DrmHwc *hwc);