diff --git a/include/openssl/ssl.h b/include/openssl/ssl.h
index a2d6862831..8eb3c5389f 100644
--- a/include/openssl/ssl.h
+++ b/include/openssl/ssl.h
@@ -2259,6 +2259,7 @@ int ERR_load_SSL_strings(void);
 # define SSL_F_DTLS1_READ_FAILED                          339
 # define SSL_F_DTLS1_RETRANSMIT_MESSAGE                   390
 # define SSL_F_DTLS1_WRITE_APP_DATA_BYTES                 268
+# define SSL_F_DTLS1_WRITE_BYTES                          545
 # define SSL_F_DTLSV1_LISTEN                              350
 # define SSL_F_DTLS_CONSTRUCT_CHANGE_CIPHER_SPEC          371
 # define SSL_F_DTLS_CONSTRUCT_HELLO_VERIFY_REQUEST        385
diff --git a/ssl/record/rec_layer_d1.c b/ssl/record/rec_layer_d1.c
index 9f80050f01..83f40943f3 100644
--- a/ssl/record/rec_layer_d1.c
+++ b/ssl/record/rec_layer_d1.c
@@ -732,8 +732,10 @@ int dtls1_write_bytes(SSL *s, int type, const void *buf, size_t len,
 {
     int i;
 
-    if (!ossl_assert(len <= SSL3_RT_MAX_PLAIN_LENGTH))
+    if (!ossl_assert(len <= SSL3_RT_MAX_PLAIN_LENGTH)) {
+        SSLerr(SSL_F_DTLS1_WRITE_BYTES, ERR_R_INTERNAL_ERROR);
         return -1;
+    }
     s->rwstate = SSL_NOTHING;
     i = do_dtls1_write(s, type, buf, len, 0, written);
     return i;
diff --git a/ssl/ssl_err.c b/ssl/ssl_err.c
index f7de9f61d9..e334b00370 100644
--- a/ssl/ssl_err.c
+++ b/ssl/ssl_err.c
@@ -46,6 +46,7 @@ static ERR_STRING_DATA SSL_str_functs[] = {
     {ERR_FUNC(SSL_F_DTLS1_RETRANSMIT_MESSAGE), "dtls1_retransmit_message"},
     {ERR_FUNC(SSL_F_DTLS1_WRITE_APP_DATA_BYTES),
      "dtls1_write_app_data_bytes"},
+    {ERR_FUNC(SSL_F_DTLS1_WRITE_BYTES), "dtls1_write_bytes"},
     {ERR_FUNC(SSL_F_DTLSV1_LISTEN), "DTLSv1_listen"},
     {ERR_FUNC(SSL_F_DTLS_CONSTRUCT_CHANGE_CIPHER_SPEC),
      "dtls_construct_change_cipher_spec"},