diff --git a/R/spec_tools.R b/R/spec_tools.R
index 03b2539..f8545d4 100644
--- a/R/spec_tools.R
+++ b/R/spec_tools.R
@@ -44,7 +44,7 @@
 #' @param end Largest font size. Default is 20.
 #' @param na_font_size font size for NA values
 #' @export
-spec_font_size <- function(x, begin = 10, end = 20, na_font_size = "inherit") {
+spec_font_size <- function(x, begin = 8, end = 16, na_font_size = 12) {
   x <- round(rescale(x, c(begin, end)))
   x[is.na(x)] <- na_font_size
   return(x)