diff --git a/R/block.R b/R/block.R
index 3a534b5296..14e3d0f10c 100644
--- a/R/block.R
+++ b/R/block.R
@@ -605,7 +605,7 @@ tangle_block = function(x) {
     eval(parse_only(unlist(str_extract(code, 'read_chunk\\(([^)]+)\\)'))))
   }
   code = parse_chunk(code)
-  code = tangle_mask(code, ev, params$error)
+  code = tangle_mask(code, ev, x$params$error)
   if (opts_knit$get('documentation') == 0L) return(one_string(code))
   # e.g. when documentation 1 or 2 with purl()
   label_code(code, x)