diff --git a/R/kableExtra-package.R b/R/kableExtra-package.R
index 4b89362..6dd0514 100644
--- a/R/kableExtra-package.R
+++ b/R/kableExtra-package.R
@@ -61,7 +61,7 @@
 #' @importFrom rmarkdown latex_dependency
 #' @importFrom magrittr %>%
 #' @importFrom utils read.csv
-#' @importFrom readr read_lines
+#' @importFrom readr read_lines read_file
 #' @name kableExtra-package
 #' @aliases kableExtra
 #' @docType package
diff --git a/R/util.R b/R/util.R
index 40dab5e..87f72c8 100644
--- a/R/util.R
+++ b/R/util.R
@@ -74,8 +74,7 @@
 as_kable_xml <- function(x) {
   tmp <- tempfile(fileext = ".xml")
   write_xml(x, tmp, options = "no_declaration")
-  out <- readLines(tmp, warn = FALSE)
-  out <- paste(out, collapse = "\n")
+  out <- read_file(tmp)
   out <- structure(out, format = "html", class = "knitr_kable")
   return(out)
 }