diff --git a/vignettes/awesome_table_in_pdf.Rmd b/vignettes/awesome_table_in_pdf.Rmd
index 2d37e1b..18cb068 100644
--- a/vignettes/awesome_table_in_pdf.Rmd
+++ b/vignettes/awesome_table_in_pdf.Rmd
@@ -85,7 +85,7 @@
 ## Plain LaTeX
 Plain LaTeX table looks relatively ugly in 2017.
 ```{r}
-kable(dt)
+kable(dt, format = "latex")
 ```
 
 ## LaTeX table with booktabs