diff --git a/cap04.Rmd b/cap04.Rmd
index 9b2c9059eac6f2c589d2357e1145be6306c4b79b..6dc5235a55362833104845850df035aaba865fa2 100644
--- a/cap04.Rmd
+++ b/cap04.Rmd
@@ -4,14 +4,7 @@ author: "Fernando Mayer & Walmes Zeviani"
 ---
 
 ```{r setup, include=FALSE}
-library(knitr)
-
-opts_chunk$set(
-    dev.args=list(family = "Palatino"))
-
-options(width = 68)
-
-## Carrega as definições de sessão.
+source("knitr_setup.R")
 source("config.R")
 rty <- "md"
 ```