diff --git a/drivers/staging/vc04_services/interface/vchi/vchi_cfg.h b/drivers/staging/vc04_services/interface/vchi/vchi_cfg.h
index 26bc2d38d725e3c4c24a4cb894da11e65d01625a..b6f42b86f206f16476e86e696f18fc0adbdf0d4d 100644
--- a/drivers/staging/vc04_services/interface/vchi/vchi_cfg.h
+++ b/drivers/staging/vc04_services/interface/vchi/vchi_cfg.h
@@ -173,7 +173,7 @@
  * under the carpet. */
 #if VCHI_RX_MSG_QUEUE_SIZE < (VCHI_MAX_MSG_SIZE/16 + 1) * VCHI_NUM_READ_SLOTS
 #  undef VCHI_RX_MSG_QUEUE_SIZE
-#  define VCHI_RX_MSG_QUEUE_SIZE (VCHI_MAX_MSG_SIZE/16 + 1) * VCHI_NUM_READ_SLOTS
+#  define VCHI_RX_MSG_QUEUE_SIZE ((VCHI_MAX_MSG_SIZE/16 + 1) * VCHI_NUM_READ_SLOTS)
 #endif
 
 /* How many bulk transmits can we have pending. Once exhausted, vchi_bulk_queue_transmit