diff --git a/ChangeLog.d/fix_tls_record_size_check.txt b/ChangeLog.d/fix_tls_record_size_check.txt
new file mode 100644
index 0000000..13d452d
--- /dev/null
+++ b/ChangeLog.d/fix_tls_record_size_check.txt
@@ -0,0 +1,4 @@
+Bugfix
+   * Fix record sizes larger than 16384 being sometimes accepted despite being
+     non-compliant. This could not lead to a buffer overflow. In particular,
+     application data size was already checked correctly.
diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index 217859c..e47c538 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -3908,7 +3908,7 @@
 
     /* Check actual (decrypted) record content length against
      * configured maximum. */
-    if( ssl->in_msglen > MBEDTLS_SSL_IN_CONTENT_LEN )
+    if( rec->data_len > MBEDTLS_SSL_IN_CONTENT_LEN )
     {
         MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad message length" ) );
         return( MBEDTLS_ERR_SSL_INVALID_RECORD );