Use valueOf().
diff --git a/src/test/java/org/apache/commons/lang3/SystemUtilsTest.java b/src/test/java/org/apache/commons/lang3/SystemUtilsTest.java
index 38f917b..eea7ae0 100644
--- a/src/test/java/org/apache/commons/lang3/SystemUtilsTest.java
+++ b/src/test/java/org/apache/commons/lang3/SystemUtilsTest.java
@@ -539,7 +539,7 @@
         final String expectedStringValue = System.getProperty("java.awt.headless");
         final String expectedStringValueWithDefault = System.getProperty("java.awt.headless", "false");
         assertNotNull(expectedStringValueWithDefault);
-        final boolean expectedValue = Boolean.valueOf(expectedStringValue).booleanValue();
+        final boolean expectedValue = Boolean.parseBoolean(expectedStringValue);
         if (expectedStringValue != null) {
             assertEquals(expectedStringValue, SystemUtils.JAVA_AWT_HEADLESS);
         }