diff --git a/checkstyle.xml b/checkstyle.xml
index 2091db59..e0612958 100644
--- a/checkstyle.xml
+++ b/checkstyle.xml
@@ -11,7 +11,7 @@ Checkstyle configuration that checks the sun coding conventions.
 -->
 <module name="Checker">
   <property name="severity" value="warning"/>
-  <property name="fileExtensions" value="java, properties, xml"/>
+  <property name="fileExtensions" value="java"/>
   <module name="TreeWalker">
     <module name="JavadocMethod"/>
     <module name="JavadocType"/>
diff --git a/pom.xml b/pom.xml
index 78771165..d824a3aa 100644
--- a/pom.xml
+++ b/pom.xml
@@ -221,9 +221,32 @@
                     </execution>
                 </executions>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-checkstyle-plugin</artifactId>
+                <version>3.1.1</version>
+                <configuration>
+                    <excludes>*Test.java</excludes>
+                    <configLocation>checkstyle.xml</configLocation>
+                    <encoding>UTF-8</encoding>
+                    <consoleOutput>true</consoleOutput>
+                    <failsOnError>true</failsOnError>
+                    <linkXRef>false</linkXRef>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>validate</id>
+                        <phase>validate</phase>
+                        <goals>
+                            <goal>check</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
         </plugins>
     </build>
 
+
     <profiles>
         <profile>
             <id>release</id>