diff --git a/src/test/java/org/apache/maven/plugins/checkstyle/CheckstyleReportTest.java b/src/test/java/org/apache/maven/plugins/checkstyle/CheckstyleReportTest.java
index a2009aab..ba85a81c 100644
--- a/src/test/java/org/apache/maven/plugins/checkstyle/CheckstyleReportTest.java
+++ b/src/test/java/org/apache/maven/plugins/checkstyle/CheckstyleReportTest.java
@@ -135,6 +135,7 @@ private void generateReport(String pluginXml) throws Exception {
             assertTrue("Test cache file exists", new File(cacheFile).exists());
         }
 
+        File outputDir = mojo.getReportOutputDirectory();
         File useFile = (File) getVariableValueFromObject(mojo, "useFile");
         if (useFile != null) {
             assertTrue("Test useFile exists", useFile.exists());