diff --git a/configs/sam4s-xplained-pro/nsh/defconfig b/configs/sam4s-xplained-pro/nsh/defconfig
index bcafa6b276..7bfa9bc104 100644
--- a/configs/sam4s-xplained-pro/nsh/defconfig
+++ b/configs/sam4s-xplained-pro/nsh/defconfig
@@ -297,6 +297,7 @@ CONFIG_ARCH_HAVE_IRQPRIO=y
 CONFIG_ARCH_HAVE_VFORK=y
 # CONFIG_ARCH_HAVE_MMU is not set
 # CONFIG_ARCH_NAND_HWECC is not set
+CONFIG_ARCH_HAVE_EXTCLK=y
 # CONFIG_ARCH_IRQPRIO is not set
 CONFIG_ARCH_STACKDUMP=y
 # CONFIG_ENDIAN_BIG is not set