diff --git a/src/shrpx_http3_upstream.cc b/src/shrpx_http3_upstream.cc
index 68775eb2..4010e098 100644
--- a/src/shrpx_http3_upstream.cc
+++ b/src/shrpx_http3_upstream.cc
@@ -221,7 +221,7 @@ int get_new_connection_id(ngtcp2_conn *conn, ngtcp2_cid *cid, uint8_t *token,
   auto config = get_config();
   auto &quicconf = config->quic;
 
-  if (generate_encrypted_quic_connection_id(
+  if (generate_quic_connection_id(
           *cid, cidlen, worker->get_cid_prefix(),
           quicconf.upstream.cid_encryption_key.data()) != 0) {
     return NGTCP2_ERR_CALLBACK_FAILURE;
@@ -559,7 +559,7 @@ int Http3Upstream::init(const UpstreamAddr *faddr, const Address &remote_addr,
 
   ngtcp2_cid scid;
 
-  if (generate_encrypted_quic_connection_id(
+  if (generate_quic_connection_id(
           scid, SHRPX_QUIC_SCIDLEN, worker->get_cid_prefix(),
           quicconf.upstream.cid_encryption_key.data()) != 0) {
     return -1;
diff --git a/src/shrpx_quic.cc b/src/shrpx_quic.cc
index bf313909..529cde57 100644
--- a/src/shrpx_quic.cc
+++ b/src/shrpx_quic.cc
@@ -161,9 +161,8 @@ int generate_quic_retry_connection_id(ngtcp2_cid &cid, size_t cidlen,
   return encrypt_quic_connection_id(p, p, key);
 }
 
-int generate_encrypted_quic_connection_id(ngtcp2_cid &cid, size_t cidlen,
-                                          const uint8_t *cid_prefix,
-                                          const uint8_t *key) {
+int generate_quic_connection_id(ngtcp2_cid &cid, size_t cidlen,
+                                const uint8_t *cid_prefix, const uint8_t *key) {
   assert(cidlen == SHRPX_QUIC_SCIDLEN);
 
   if (RAND_bytes(cid.data, cidlen) != 1) {
diff --git a/src/shrpx_quic.h b/src/shrpx_quic.h
index 846d5a83..52a4d67a 100644
--- a/src/shrpx_quic.h
+++ b/src/shrpx_quic.h
@@ -85,9 +85,8 @@ int generate_quic_retry_connection_id(ngtcp2_cid &cid, size_t cidlen,
                                       const uint8_t *server_id,
                                       const uint8_t *key);
 
-int generate_encrypted_quic_connection_id(ngtcp2_cid &cid, size_t cidlen,
-                                          const uint8_t *cid_prefix,
-                                          const uint8_t *key);
+int generate_quic_connection_id(ngtcp2_cid &cid, size_t cidlen,
+                                const uint8_t *cid_prefix, const uint8_t *key);
 
 int encrypt_quic_connection_id(uint8_t *dest, const uint8_t *src,
                                const uint8_t *key);