diff --git a/opt/opcode_names.h b/opt/opcode_names.h
index fe302079..b9a966cd 100644
--- a/opt/opcode_names.h
+++ b/opt/opcode_names.h
@@ -8,6 +8,7 @@ static const char* reverse_opcode_names[] =
    "VECTOR-REF", "VECTOR-SET", "VECTOR-LENGTH", 
    "BYTES-REF", "BYTES-SET", "BYTES-LENGTH",
    "STRING-REF", "STRING-SET", "STRING-LENGTH",
+   "STRING-CURSOR-NEXT", "STRING-CURSOR-PREV", "STRING-SIZE",
    "MAKE-PROCEDURE", "MAKE-VECTOR",
    "MAKE-EXCEPTION", "AND", "NULL?", "FIXNUM?", "SYMBOL?", "CHAR?",
    "EOF?", "TYPEP", "MAKE", "SLOT-REF", "SLOT-SET",