diff --git a/src/test/org/apache/commons/lang/BitFieldTest.java b/src/test/org/apache/commons/lang/BitFieldTest.java
index cd4f8d856..73fe1a16e 100644
--- a/src/test/org/apache/commons/lang/BitFieldTest.java
+++ b/src/test/org/apache/commons/lang/BitFieldTest.java
@@ -123,7 +123,7 @@ public class BitFieldTest extends TestCase {
     public void testIsAllSet() {
         for (int j = 0; j < 0x3F80; j += 0x80) {
             assertTrue(!bf_multi.isAllSet(j));
-            assertTrue(!bf_zero.isAllSet(j));
+            assertTrue(bf_zero.isAllSet(j));
         }
         assertTrue(bf_multi.isAllSet(0x3F80));
         assertTrue(!bf_single.isAllSet(0));