diff --git a/supervisor/shared/translate.c b/supervisor/shared/translate.c
index 187d5ff8a5..6218ff461b 100644
--- a/supervisor/shared/translate.c
+++ b/supervisor/shared/translate.c
@@ -51,8 +51,8 @@ STATIC int put_utf8(char *buf, int u) {
         *buf   = 0b10000000 | (u & 0b00111111);
         return 2;
     } else { // u <= 0xffff)
-        *buf++ = 0b11000000 | (u >> 12);
-        *buf   = 0b10000000 | ((u >> 6) & 0b00111111);
+        *buf++ = 0b11100000 | (u >> 12);
+        *buf++ = 0b10000000 | ((u >> 6) & 0b00111111);
         *buf   = 0b10000000 | (u & 0b00111111);
         return 3;
     }