diff --git a/configs/mt7981_rfb_defconfig b/configs/mt7981_rfb_defconfig
index c397527..b7ffb4df 100644
--- a/configs/mt7981_rfb_defconfig
+++ b/configs/mt7981_rfb_defconfig
@@ -64,3 +64,4 @@
 CONFIG_DM_SPI=y
 CONFIG_MTK_SPIM=y
 CONFIG_HEXDUMP=y
+CONFIG_LMB_MAX_REGIONS=64