diff --git a/certificates/essentials/lpi_essentials_lesson_03.md b/certificates/essentials/lpi_essentials_lesson_03.md
index 747942d..014c689 100644
--- a/certificates/essentials/lpi_essentials_lesson_03.md
+++ b/certificates/essentials/lpi_essentials_lesson_03.md
@@ -125,42 +125,45 @@ fi
 ## Guided Exercises
 
 1. Read the contents of script1.sh below:
-```
-#!/bin/bash
 
-if [ $# -lt 1 ]
-then
-  echo "This script requires at least 1 argument."
-  exit 1
-fi
+	```
+	#!/bin/bash
+	
+	if [ $# -lt 1 ]
+	then
+	  echo "This script requires at least 1 argument."
+	  exit 1
+	fi
+	
+	echo $1 | grep "^[A-Z]*$" > /dev/null
+	if [ $? -ne 0 ]
+	then
+	  echo "no cake for you!"
+	  exit 2
+	fi
+	
+	echo "here's your cake!"
+	exit 0
+	```
 
-echo $1 | grep "^[A-Z]*$" > /dev/null
-if [ $? -ne 0 ]
-then
-  echo "no cake for you!"
-  exit 2
-fi
-
-echo "here's your cake!"
-exit 0
-```
 	* What is the output of these commands?
-	```
-./script1.sh
-echo $?
-./script1.sh cake
-echo $?
-./script1.sh CAKE
-echo $?
 
 	```
+	./script1.sh
+	echo $?
+	./script1.sh cake
+	echo $?
+	./script1.sh CAKE
+	echo $?
+	```
+
 2. Read the contents of file script2.sh:
-```
-for filename in $1/*.txt
-do
-   cp $filename $filename.bak
-done
-```
+	```
+	for filename in $1/*.txt
+	do
+	   cp $filename $filename.bak
+	done
+	```
 	* Describe the purpose of this script as you understand it.
 
 ## Explorational Exercises