diff --git a/lib/stdlib/stdlib.mk b/lib/stdlib/stdlib.mk
index 4ff405f..5332717 100644
--- a/lib/stdlib/stdlib.mk
+++ b/lib/stdlib/stdlib.mk
@@ -42,7 +42,8 @@
 			strlen.c			\
 			strncmp.c			\
 			strnlen.c			\
-			subr_prf.c)
+			subr_prf.c			\
+			timingsafe_bcmp.c)
 
 INCLUDES	+=	-Iinclude/lib/stdlib		\
 			-Iinclude/lib/stdlib/sys