diff --git a/ssl/t1_lib.c b/ssl/t1_lib.c
index 1d4565f..916ec4d 100644
--- a/ssl/t1_lib.c
+++ b/ssl/t1_lib.c
@@ -119,7 +119,7 @@
 #include <openssl/evp.h>
 #include <openssl/hmac.h>
 #include <openssl/mem.h>
-#include <openssl/obj.h>
+#include <openssl/nid.h>
 #include <openssl/rand.h>
 #include <openssl/type_check.h>