diff --git a/04_build_linux.sh b/04_build_linux.sh
index d56c4a7..0d914b8 100755
--- a/04_build_linux.sh
+++ b/04_build_linux.sh
@@ -49,11 +49,6 @@ if [ -f arch/riscv/configs/mpfs_defconfig ] ; then
 	./scripts/config --enable CONFIG_TASK_DELAY_ACCT
 	./scripts/config --enable CONFIG_TASK_XACCT
 
-	#
-	# RCU Subsystem
-	#
-	./scripts/config --module CONFIG_IKHEADERS
-
 	#
 	# Scheduler features
 	#
diff --git a/patches/linux/mpfs_defconfig b/patches/linux/mpfs_defconfig
index 047d561..7a7d7ce 100644
--- a/patches/linux/mpfs_defconfig
+++ b/patches/linux/mpfs_defconfig
@@ -130,7 +130,7 @@ CONFIG_RCU_NEED_SEGCBLIST=y
 
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
-CONFIG_IKHEADERS=m
+# CONFIG_IKHEADERS is not set
 CONFIG_LOG_BUF_SHIFT=17
 CONFIG_LOG_CPU_MAX_BUF_SHIFT=12
 CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13