1 files changed, 1 insertions, 1 deletions
diff --git a/prec.scm b/prec.scm
index c0b0d7f..19fb764 100644
--- a/prec.scm
+++ b/prec.scm
@@ -373,7 +373,7 @@
   (cond ((equal? (force prec:token) sep)
 	 (prec:warn 'expression-missing)
 	 (prec:advance)
-	 (cons '? (prec:parse-delimited sep delim)))
+	 (cons '? (prec:parse-delimited sep bp delim)))
 	((prec:delim? (force prec:token))
 	 (if (not (equal? (force prec:token) delim))
 	     (prec:warn 'mismatched-delimiter (force prec:token)