diff --git a/tests/Core/Ruleset/RuleInclusionAbsoluteLinuxTest.xml b/tests/Core/Ruleset/RuleInclusionAbsoluteLinuxTest.xml
index ab01f42135..64d1aae681 100644
--- a/tests/Core/Ruleset/RuleInclusionAbsoluteLinuxTest.xml
+++ b/tests/Core/Ruleset/RuleInclusionAbsoluteLinuxTest.xml
@@ -1,11 +1,11 @@
 <?xml version="1.0"?>
 <ruleset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="RuleInclusionAbsoluteLinuxTest" xsi:noNamespaceSchemaLocation="https://raw.githubusercontent.com/squizlabs/PHP_CodeSniffer/master/phpcs.xsd">
 
-	<!-- %path_slash_forward% will be replaced on the fly -->
-	<rule ref="%path_slash_forward%/src/Standards/Generic/Sniffs/Formatting/SpaceAfterNotSniff.php">
-	    <properties>
-	        <property name="spacing" value="10" />
-	    </properties>
-	</rule>
+    <!-- %path_slash_forward% will be replaced on the fly -->
+    <rule ref="%path_slash_forward%/src/Standards/Generic/Sniffs/Formatting/SpaceAfterNotSniff.php">
+        <properties>
+            <property name="spacing" value="10" />
+        </properties>
+    </rule>
 
 </ruleset>
diff --git a/tests/Core/Ruleset/RuleInclusionAbsoluteWindowsTest.xml b/tests/Core/Ruleset/RuleInclusionAbsoluteWindowsTest.xml
index 02229c92f7..15710d2098 100644
--- a/tests/Core/Ruleset/RuleInclusionAbsoluteWindowsTest.xml
+++ b/tests/Core/Ruleset/RuleInclusionAbsoluteWindowsTest.xml
@@ -1,11 +1,11 @@
 <?xml version="1.0"?>
 <ruleset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="RuleInclusionAbsoluteWindowsTest" xsi:noNamespaceSchemaLocation="https://raw.githubusercontent.com/squizlabs/PHP_CodeSniffer/master/phpcs.xsd">
 
-	<!-- %path_slash_back% will be replaced on the fly -->
-	<rule ref="%path_slash_back%\src\Standards\Generic\Sniffs\Formatting\SpaceAfterCastSniff.php">
-	    <properties>
-	        <property name="spacing" value="10" />
-	    </properties>
-	</rule>
+    <!-- %path_slash_back% will be replaced on the fly -->
+    <rule ref="%path_slash_back%\src\Standards\Generic\Sniffs\Formatting\SpaceAfterCastSniff.php">
+        <properties>
+            <property name="spacing" value="10" />
+        </properties>
+    </rule>
 
 </ruleset>
diff --git a/tests/Core/Ruleset/RuleInclusionTest-include.xml b/tests/Core/Ruleset/RuleInclusionTest-include.xml
index 91c017704c..ca116d45e7 100644
--- a/tests/Core/Ruleset/RuleInclusionTest-include.xml
+++ b/tests/Core/Ruleset/RuleInclusionTest-include.xml
@@ -1,10 +1,10 @@
 <?xml version="1.0"?>
 <ruleset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="RuleInclusionTest-include" xsi:noNamespaceSchemaLocation="https://raw.githubusercontent.com/squizlabs/PHP_CodeSniffer/master/phpcs.xsd">
 
-	<rule ref="Generic.Metrics.NestingLevel">
-	    <properties>
-	        <property name="nestingLevel" value="2" />
-	    </properties>
-	</rule>
+    <rule ref="Generic.Metrics.NestingLevel">
+        <properties>
+            <property name="nestingLevel" value="2" />
+        </properties>
+    </rule>
 
 </ruleset>