diff --git a/pom.xml b/pom.xml
index 1fe8473c..cb9acaac 100644
--- a/pom.xml
+++ b/pom.xml
@@ -123,6 +123,11 @@ CSV files of various types.
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <commons.encoding>UTF-8</commons.encoding>
+    <!-- 
+        Use 2.9.1 instead of 2.10; 2.10 seems to scan the 'target' dir
+        and wants license headers in .properties to be the header for Java files. 
+    -->
+    <checkstyle.version>2.9.1</checkstyle.version>
     <checkstyle.header.file>${basedir}/LICENSE-header.txt</checkstyle.header.file>
   </properties>
 
@@ -147,22 +152,31 @@ CSV files of various types.
           </excludes>
         </configuration>
       </plugin>
+      <!-- Allow checkstyle to be run interactively; keep in sync with report config below -->
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-checkstyle-plugin</artifactId>
+        <version>${checkstyle.version}</version>
+        <configuration>
+          <configLocation>${basedir}/checkstyle.xml</configLocation>
+          <enableRulesSummary>false</enableRulesSummary>
+          <headerLocation>${checkstyle.header.file}</headerLocation>
+        </configuration>
+      </plugin>
     </plugins>
   </build>
 
   <reporting>
     <plugins>
+      <!-- Keep in sync with build config above -->
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <!-- Use 2.9.1 instead of 2.10; 2.10 seems to scan the 'target' 
-        dir and wants license headers in .properties to be the header for 
-        Java files. -->
-        <version>2.9.1</version>
+        <version>${checkstyle.version}</version>
         <configuration>
           <configLocation>${basedir}/checkstyle.xml</configLocation>
           <enableRulesSummary>false</enableRulesSummary>
-          <headerLocation>${basedir}/LICENSE-header.txt</headerLocation>
+          <headerLocation>${checkstyle.header.file}</headerLocation>
         </configuration>
         <!-- We need to specify reportSets because 2.9.1 creates two reports -->
         <reportSets>
@@ -198,7 +212,7 @@ CSV files of various types.
           </tags>
         </configuration>
       </plugin>
-      <!-- 
+      <!--
           NOTE: this requires Maven 3.0.x; when used with Maven 2.2.1, the following error is seen:
           Embedded error: Error rendering Maven report: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory
        -->