diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index a458e62..2d86fda 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -2809,7 +2809,7 @@
     ssl->session    = session;
 }
 
-void ssl_set_ciphersuites( ssl_context *ssl, int *ciphersuites )
+void ssl_set_ciphersuites( ssl_context *ssl, const int *ciphersuites )
 {
     ssl->ciphersuites    = ciphersuites;
 }
@@ -3153,7 +3153,7 @@
     return( "unknown" );
 }
 
-int ssl_default_ciphersuites[] =
+const int ssl_default_ciphersuites[] =
 {
 #if defined(POLARSSL_DHM_C)
 #if defined(POLARSSL_AES_C)