diff --git a/spring-boot-project/spring-boot/src/test/resources/logback-without-extension b/spring-boot-project/spring-boot/src/test/resources/logback-without-extension
index 68080b7c975b..1d55bbaf83fb 100644
--- a/spring-boot-project/spring-boot/src/test/resources/logback-without-extension
+++ b/spring-boot-project/spring-boot/src/test/resources/logback-without-extension
@@ -6,6 +6,6 @@
 		</encoder>
 	</appender>
 	<root level="INFO">
-		<appender-ref ref="CONSOLE" />
+		<appender-ref ref="CONSOLE"/>
 	</root>
 </configuration>
diff --git a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/include-with-profile.xml b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/include-with-profile.xml
index 12772f0a3b27..231de8f580ae 100644
--- a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/include-with-profile.xml
+++ b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/include-with-profile.xml
@@ -1,5 +1,5 @@
 <included>
 	<springProfile name="production">
-		<logger name="org.springframework.boot.logging.logback" level="TRACE" />
+		<logger name="org.springframework.boot.logging.logback" level="TRACE"/>
 	</springProfile>
 </included>
\ No newline at end of file
diff --git a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/include-with-property.xml b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/include-with-property.xml
index c7e095d1596d..74f08edcb49e 100644
--- a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/include-with-property.xml
+++ b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/include-with-property.xml
@@ -1,3 +1,3 @@
 <included>
-	<springProperty scope="context" name="MINE" source="my.example-property" defaultValue="default-test" />
+	<springProperty scope="context" name="MINE" source="my.example-property" defaultValue="default-test"/>
 </included>
\ No newline at end of file
diff --git a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/multi-profile-names.xml b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/multi-profile-names.xml
index 480897e67423..4f785c163a02 100644
--- a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/multi-profile-names.xml
+++ b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/multi-profile-names.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
-	<include resource="org/springframework/boot/logging/logback/base.xml" />
+	<include resource="org/springframework/boot/logging/logback/base.xml"/>
 	<springProfile name="production, test">
-		<logger name="org.springframework.boot.logging.logback" level="TRACE" />
+		<logger name="org.springframework.boot.logging.logback" level="TRACE"/>
 	</springProfile>
 </configuration>
diff --git a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/nested.xml b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/nested.xml
index 9ad8b0456803..247229cc0055 100644
--- a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/nested.xml
+++ b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/nested.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
-	<include resource="org/springframework/boot/logging/logback/base.xml" />
+	<include resource="org/springframework/boot/logging/logback/base.xml"/>
 	<springProfile name="outer">
 		<springProfile name="inner">
-			<logger name="org.springframework.boot.logging.logback" level="TRACE" />
+			<logger name="org.springframework.boot.logging.logback" level="TRACE"/>
 		</springProfile>
 	</springProfile>
 </configuration>
diff --git a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/production-profile.xml b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/production-profile.xml
index 8b263afd5ddf..bb3c8aae3cba 100644
--- a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/production-profile.xml
+++ b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/production-profile.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
-	<include resource="org/springframework/boot/logging/logback/base.xml" />
+	<include resource="org/springframework/boot/logging/logback/base.xml"/>
 	<springProfile name="production">
-		<logger name="org.springframework.boot.logging.logback" level="TRACE" />
+		<logger name="org.springframework.boot.logging.logback" level="TRACE"/>
 	</springProfile>
 </configuration>
diff --git a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/profile-expression.xml b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/profile-expression.xml
index 448bb017a5e4..c11d7f9f6599 100644
--- a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/profile-expression.xml
+++ b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/profile-expression.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
-	<include resource="org/springframework/boot/logging/logback/base.xml" />
+	<include resource="org/springframework/boot/logging/logback/base.xml"/>
 	<springProfile name="production | test">
-		<logger name="org.springframework.boot.logging.logback" level="TRACE" />
+		<logger name="org.springframework.boot.logging.logback" level="TRACE"/>
 	</springProfile>
 </configuration>
diff --git a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/profile-in-include.xml b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/profile-in-include.xml
index 3c4c9ec17f6f..a03c5d926883 100644
--- a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/profile-in-include.xml
+++ b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/profile-in-include.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
-	<include resource="org/springframework/boot/logging/logback/base.xml" />
-	<include resource="org/springframework/boot/logging/logback/include-with-profile.xml" />
+	<include resource="org/springframework/boot/logging/logback/base.xml"/>
+	<include resource="org/springframework/boot/logging/logback/include-with-profile.xml"/>
 </configuration>
diff --git a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property-default-value.xml b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property-default-value.xml
index dd00a99b875d..5fcf44025c48 100644
--- a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property-default-value.xml
+++ b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property-default-value.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
-	<include resource="org/springframework/boot/logging/logback/base.xml" />
+	<include resource="org/springframework/boot/logging/logback/base.xml"/>
 	<springProperty scope="context" name="SIMPLE" source="testpropertyfoobar" defaultValue="foo"/>
 	<springProperty scope="context" name="MINE" source="my.example-property" defaultValue="bar"/>
 </configuration>
diff --git a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property-in-if.xml b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property-in-if.xml
index b16fde51f3e6..92bb19cd9e7b 100644
--- a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property-in-if.xml
+++ b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property-in-if.xml
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
-	<include resource="org/springframework/boot/logging/logback/base.xml" />
-	<springProperty scope="context" name="MINE" source="my.example-property" />
+	<include resource="org/springframework/boot/logging/logback/base.xml"/>
+	<springProperty scope="context" name="MINE" source="my.example-property"/>
 	<if condition='property("MINE").contains("true")'>
 		<then>
-			<variable scope="context" name="MYCHECK" value="i-was-included" />
+			<variable scope="context" name="MYCHECK" value="i-was-included"/>
 		</then>
 	</if>
 </configuration>
diff --git a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property-in-include.xml b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property-in-include.xml
index ca2c2705b4e8..f367385c99e3 100644
--- a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property-in-include.xml
+++ b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property-in-include.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
-	<include resource="org/springframework/boot/logging/logback/base.xml" />
-	<include resource="org/springframework/boot/logging/logback/include-with-property.xml" />
+	<include resource="org/springframework/boot/logging/logback/base.xml"/>
+	<include resource="org/springframework/boot/logging/logback/include-with-property.xml"/>
 </configuration>
diff --git a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property.xml b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property.xml
index 15ef50ae3293..a574d13df7b2 100644
--- a/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property.xml
+++ b/spring-boot-project/spring-boot/src/test/resources/org/springframework/boot/logging/logback/property.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
-	<include resource="org/springframework/boot/logging/logback/base.xml" />
+	<include resource="org/springframework/boot/logging/logback/base.xml"/>
 	<springProperty scope="context" name="SIMPLE" source="testpropertyfoobar"/>
 	<springProperty scope="context" name="MINE" source="my.example-property"/>
 </configuration>