diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/GcKeepFilesTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/GcKeepFilesTest.java
index 5fcdd3757..67848ae7e 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/GcKeepFilesTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/GcKeepFilesTest.java
@@ -48,11 +48,15 @@ public void testKeepFiles() throws Exception {
 		assertEquals(4, stats.numberOfLooseObjects);
 		assertEquals(4, stats.numberOfPackedObjects);
 		assertEquals(1, stats.numberOfPackFiles);
+		PackFile bitmapFile = singlePack.getPackFile().create(PackExt.BITMAP_INDEX);
+		assertTrue(keepFile.exists());
+		assertTrue(bitmapFile.delete());
 		gc.gc();
 		stats = gc.getStatistics();
 		assertEquals(0, stats.numberOfLooseObjects);
 		assertEquals(8, stats.numberOfPackedObjects);
 		assertEquals(2, stats.numberOfPackFiles);
+		assertEquals(1, stats.numberOfBitmaps);
 
 		// check that no object is packed twice
 		Iterator<Pack> packs = repo.getObjectDatabase().getPacks()