diff --git a/drivers/staging/greybus/operation.h b/drivers/staging/greybus/operation.h
index 3b02db5cd08b..1edd512d9a76 100644
--- a/drivers/staging/greybus/operation.h
+++ b/drivers/staging/greybus/operation.h
@@ -69,7 +69,7 @@ struct gb_operation_msg_hdr {
 	__u8	pad[2];		/* must be zero (ignore when read) */
 } __aligned(sizeof(u64));
 
-#define GB_OPERATION_MESSAGE_SIZE_MAX	4096
+#define GB_OPERATION_MESSAGE_SIZE_MAX	U16_MAX
 
 /*
  * Protocol code should only examine the payload and payload_size