diff --git a/configs/br4_defconfig b/configs/br4_defconfig
index e6970a4..7247b9c 100644
--- a/configs/br4_defconfig
+++ b/configs/br4_defconfig
@@ -2,3 +2,4 @@
 CONFIG_TARGET_BR4=y
 CONFIG_CMD_NET=y
 CONFIG_CC_OPTIMIZE_LIBS_FOR_SPEED=y
+CONFIG_LIB_RAND=y