diff --git a/ssl/record/methods/tls_common.c b/ssl/record/methods/tls_common.c
index 80d4477bd0..317d81c6d8 100644
--- a/ssl/record/methods/tls_common.c
+++ b/ssl/record/methods/tls_common.c
@@ -1093,9 +1093,12 @@ int tls13_common_post_process_record(OSSL_RECORD_LAYER *rl, TLS_RL_RECORD *rec)
         return 0;
     }
 
-    if (rl->msg_callback != NULL)
-        rl->msg_callback(0, rl->version, SSL3_RT_INNER_CONTENT_TYPE, &rec->type,
-                        1, rl->cbarg);
+    if (rl->msg_callback != NULL) {
+        unsigned char ctype = (unsigned char)rec->type;
+
+        rl->msg_callback(0, rl->version, SSL3_RT_INNER_CONTENT_TYPE, &ctype,
+                         1, rl->cbarg);
+    }
 
     /*
      * TLSv1.3 alert and handshake records are required to be non-zero in