diff --git a/juneau-core/juneau-core-utest/src/test/java/org/apache/juneau/transforms/LocalizedDatesTest.java b/juneau-core/juneau-core-utest/src/test/java/org/apache/juneau/transforms/LocalizedDatesTest.java
index 5185e40..ee217f7 100644
--- a/juneau-core/juneau-core-utest/src/test/java/org/apache/juneau/transforms/LocalizedDatesTest.java
+++ b/juneau-core/juneau-core-utest/src/test/java/org/apache/juneau/transforms/LocalizedDatesTest.java
@@ -35,16 +35,21 @@
 	}
 
 	private static TimeZone prevTimeZone;
+	private static Locale prevLocale;
 
 	@BeforeClass
 	public static void before() {
 		prevTimeZone = TimeZone.getDefault();
 		TimeZone.setDefault(TimeZone.getTimeZone("GMT"));
+		prevLocale = Locale.getDefault();
+		Locale.setDefault(Locale.ROOT);
+
 	}
 
 	@AfterClass
 	public static void after() {
 		TimeZone.setDefault(prevTimeZone);
+		Locale.setDefault(prevLocale);
 	}
 
 
@@ -659,4 +664,4 @@
 			actual2 = actual2.replaceAll("\\([^\\)]+\\) ", "").replaceAll(" \\([^\\)]+\\)", "");  // Fix Windows-specific formatting difference
 		assertEquals(expected, actual2);
 	}
-}
\ No newline at end of file
+}