diff --git a/ssl/t1_lib.c b/ssl/t1_lib.c
index dbaadf2..c8a4fea 100644
--- a/ssl/t1_lib.c
+++ b/ssl/t1_lib.c
@@ -124,7 +124,7 @@
 static int ssl_check_clienthello_tlsext(SSL *s);
 static int ssl_check_serverhello_tlsext(SSL *s);
 
-SSL3_ENC_METHOD TLSv1_enc_data={
+const SSL3_ENC_METHOD TLSv1_enc_data = {
 	tls1_enc,
 	tls1_mac,
 	tls1_setup_key_block,
@@ -144,7 +144,7 @@
 	ssl3_add_to_finished_hash,
 	};
 
-SSL3_ENC_METHOD TLSv1_1_enc_data={
+const SSL3_ENC_METHOD TLSv1_1_enc_data = {
 	tls1_enc,
 	tls1_mac,
 	tls1_setup_key_block,
@@ -164,7 +164,7 @@
 	ssl3_add_to_finished_hash,
 	};
 
-SSL3_ENC_METHOD TLSv1_2_enc_data={
+const SSL3_ENC_METHOD TLSv1_2_enc_data = {
 	tls1_enc,
 	tls1_mac,
 	tls1_setup_key_block,