1 files changed, 1 insertions, 1 deletions
diff --git a/netwerk/test/unit/test_bug1218029.js b/netwerk/test/unit/test_bug1218029.js
index 48165807bf..c3eaa201a4 100644
--- a/netwerk/test/unit/test_bug1218029.js
+++ b/netwerk/test/unit/test_bug1218029.js
@@ -84,7 +84,7 @@ function execute_test(test) {
       equal(status, test.status);
     },
     onIncrementalData(loader, context, length, data, consumed) {
-      ok(chunkIndex < test.dataChunks.length - 1);
+      Assert.less(chunkIndex, test.dataChunks.length - 1);
       var expectedChunk = test.dataChunks[chunkIndex];
       equal(length, expectedChunk.length);
       equal(String.fromCharCode.apply(null, data), expectedChunk);