diff --git a/target/linux/ixp4xx/config-3.3 b/target/linux/ixp4xx/config-3.3
index 3d90775c56..54a0ebbb4c 100644
--- a/target/linux/ixp4xx/config-3.3
+++ b/target/linux/ixp4xx/config-3.3
@@ -24,6 +24,7 @@ CONFIG_ARM_PATCH_PHYS_VIRT=y
 CONFIG_BCMA_POSSIBLE=y
 CONFIG_BOUNCE=y
 # CONFIG_CACHE_L2X0 is not set
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 CONFIG_CLKSRC_MMIO=y
 CONFIG_CMDLINE="root=/dev/mtdblock2 rootfstype=squashfs,jffs2 noinitrd console=ttyS0,115200"
 CONFIG_CMDLINE_FROM_BOOTLOADER=y