diff --git a/src/common/capwap_dtls.c b/src/common/capwap_dtls.c
index debb246..9d92c47 100644
--- a/src/common/capwap_dtls.c
+++ b/src/common/capwap_dtls.c
@@ -808,42 +808,6 @@ void capwap_crypt_close(struct capwap_dtls* dtls) {
 	}
 }
 
-/* Change bio send */
-void capwap_crypt_change_bio_send(struct capwap_dtls* dtls, capwap_bio_send biosend, void* param) {
-	BIO* bio;
-
-	ASSERT(dtls != NULL);
-	ASSERT(dtls->enable != 0);
-	ASSERT(biosend != NULL);
-
-	bio = SSL_get_wbio((SSL*)dtls->sslsession);
-	if ((bio != NULL) && (bio->ptr != NULL)) {
-		struct bio_capwap_data* data = (struct bio_capwap_data*)bio->ptr;
-
-		data->send = biosend;
-		data->param = param;
-	}
-}
-
-/* Change DTLS */
-void capwap_crypt_change_dtls(struct capwap_dtls* dtls, struct capwap_dtls* newdtls) {
-	BIO* bio;
-
-	ASSERT(dtls != NULL);
-	ASSERT(dtls->enable != 0);
-	ASSERT(newdtls != NULL);
-
-	memcpy(newdtls, dtls, sizeof(struct capwap_dtls));
-
-	/* Update DTLS into BIO */
-	bio = SSL_get_rbio((SSL*)dtls->sslsession);
-	if ((bio != NULL) && (bio->ptr != NULL)) {
-		struct bio_capwap_data* data = (struct bio_capwap_data*)bio->ptr;
-
-		data->dtls = newdtls;
-	}
-}
-
 /* */
 void capwap_crypt_freesession(struct capwap_dtls* dtls) {
 	ASSERT(dtls != NULL);
diff --git a/src/common/capwap_dtls.h b/src/common/capwap_dtls.h
index 6fea12f..b41d739 100644
--- a/src/common/capwap_dtls.h
+++ b/src/common/capwap_dtls.h
@@ -108,8 +108,6 @@ void capwap_crypt_freesession(struct capwap_dtls* dtls);
 
 int capwap_crypt_open(struct capwap_dtls* dtls, struct sockaddr_storage* peeraddr);
 void capwap_crypt_close(struct capwap_dtls* dtls);
-void capwap_crypt_change_bio_send(struct capwap_dtls* dtls, capwap_bio_send biosend, void* param);
-void capwap_crypt_change_dtls(struct capwap_dtls* dtls, struct capwap_dtls* newdtls);
 
 int capwap_crypt_sendto(struct capwap_dtls* dtls, int sock, void* buffer, int size, struct sockaddr_storage* sendfromaddr, struct sockaddr_storage* sendtoaddr);
 int capwap_crypt_sendto_fragmentpacket(struct capwap_dtls* dtls, int sock, struct capwap_list* fragmentlist, struct sockaddr_storage* sendfromaddr, struct sockaddr_storage* sendtoaddr);