diff --git a/cros_gralloc/gralloc0/gralloc0.cc b/cros_gralloc/gralloc0/gralloc0.cc
index df1f62c..96593b8 100644
--- a/cros_gralloc/gralloc0/gralloc0.cc
+++ b/cros_gralloc/gralloc0/gralloc0.cc
@@ -423,6 +423,8 @@
 		.lockAsync = gralloc0_lock_async,
 		.unlockAsync = gralloc0_unlock_async,
 		.lockAsync_ycbcr = gralloc0_lock_async_ycbcr,
+                .validateBufferSize = NULL,
+                .getTransportSize = NULL,
 	    },
 
 	.alloc = nullptr,