diff --git a/src/test/java/org/apache/commons/lang3/time/FastDateParser_TimeZoneStrategyTest.java b/src/test/java/org/apache/commons/lang3/time/FastDateParser_TimeZoneStrategyTest.java
index e02d7808f..3a1454fc3 100644
--- a/src/test/java/org/apache/commons/lang3/time/FastDateParser_TimeZoneStrategyTest.java
+++ b/src/test/java/org/apache/commons/lang3/time/FastDateParser_TimeZoneStrategyTest.java
@@ -82,7 +82,7 @@ public class FastDateParser_TimeZoneStrategyTest extends AbstractLangTest {
     private void testTimeZoneStrategyPattern(final String languageTag) throws ParseException {
         final Locale locale = Locale.forLanguageTag(languageTag);
         assumeFalse(LocaleUtils.isLanguageUndetermined(locale), () -> toFailureMessage(locale, languageTag));
-        assumeTrue(LocaleUtils.isAvailableLocale(locale), () -> toFailureMessage(locale, null));
+        assumeTrue(LocaleUtils.isAvailableLocale(locale), () -> toFailureMessage(locale, languageTag));
         final TimeZone tzDefault = TimeZone.getTimeZone("Etc/UTC");
         final FastDateParser parser = new FastDateParser("z", tzDefault, locale);
         parser.parse("Horário do Meridiano de Greenwich");