diff --git a/crypto/ct/build.info b/crypto/ct/build.info
index 6c59495eb..200771500 100644
--- a/crypto/ct/build.info
+++ b/crypto/ct/build.info
@@ -1,2 +1,2 @@
 LIBS=../../libcrypto
-SOURCE[../../libcrypto]= ct_lib.c ct_err.c
+SOURCE[../../libcrypto]= ct_lib.c ct_err.c ct_oct.c ct_prn.c