diff --git a/boards/risc-v/bl602/bl602evb/configs/timer/defconfig b/boards/risc-v/bl602/bl602evb/configs/timer/defconfig
index ce7e7ec8ac7..b68ae3e8091 100644
--- a/boards/risc-v/bl602/bl602evb/configs/timer/defconfig
+++ b/boards/risc-v/bl602/bl602evb/configs/timer/defconfig
@@ -67,7 +67,6 @@ CONFIG_RAM_START=0xc0800000
 CONFIG_RAW_BINARY=y
 CONFIG_RR_INTERVAL=200
 CONFIG_SCHED_CPULOAD=y
-CONFIG_SCHED_CPULOAD_EXTCLK=y
 CONFIG_SCHED_WAITPID=y
 CONFIG_STACK_COLORATION=y
 CONFIG_START_DAY=20