diff --git a/qbsp/parser.cc b/qbsp/parser.cc
index 7282c2aa..60316911 100644
--- a/qbsp/parser.cc
+++ b/qbsp/parser.cc
@@ -111,6 +111,7 @@ ParseToken(parser_t *p, int flags)
                 case 'r':
                 case 't':
                 case '\\':
+                case 'b': // tyrutils-ericw extension, parsed by light, used to toggle bold text
                         //regular two-char escapes
                     *token_p++ = *p->pos++;
                     if (token_p > &p->token[MAXTOKEN - 1])