diff --git a/target/linux/ixp4xx/config-4.9 b/target/linux/ixp4xx/config-4.9
index c9b1be9304..0090f28826 100644
--- a/target/linux/ixp4xx/config-4.9
+++ b/target/linux/ixp4xx/config-4.9
@@ -235,6 +235,7 @@ CONFIG_SWIOTLB=y
 CONFIG_SYS_SUPPORTS_APM_EMULATION=y
 CONFIG_TICK_CPU_ACCOUNTING=y
 CONFIG_UNCOMPRESS_INCLUDE="mach/uncompress.h"
+CONFIG_UNWINDER_ARM=y
 CONFIG_USB_EHCI_BIG_ENDIAN_DESC=y
 CONFIG_USB_EHCI_BIG_ENDIAN_MMIO=y
 CONFIG_USB_SUPPORT=y