diff --git a/lib/Makefile b/lib/Makefile
index f83f6e8..86ca1a6 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -69,6 +69,7 @@
 COBJS-y += crc32.o
 COBJS-y += ctype.o
 COBJS-y += div64.o
+COBJS-y += linux_string.o
 COBJS-y += string.o
 COBJS-y += time.o
 COBJS-$(CONFIG_BOOTP_PXE) += uuid.o