diff --git a/ssl/t1_lib.c b/ssl/t1_lib.c
index abbde22ef302b5d9cbb7277b9595c8a42c3fa567..d591daaff638a4161d95ba72e256c82217084d64 100644
--- a/ssl/t1_lib.c
+++ b/ssl/t1_lib.c
@@ -303,7 +303,7 @@ int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **p, unsigned char *d, in
 						}
 					else 
 						s->servername_done = strlen(s->session->tlsext_hostname) == len 
-							&& strncmp(s->session->tlsext_hostname,sdata, len) == 0;
+							&& strncmp(s->session->tlsext_hostname, (char *)sdata, len) == 0;
 					
 					break;