diff --git a/lib/Makefile b/lib/Makefile
index 44001af..16feaab 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -81,6 +81,8 @@
 
 obj-$(CONFIG_HAVE_ARCH_TRACEHOOK) += syscall.o
 
+obj-$(CONFIG_DYNAMIC_PRINTK_DEBUG) += dynamic_printk.o
+
 hostprogs-y	:= gen_crc32table
 clean-files	:= crc32table.h