diff --git a/epub_test.go b/epub_test.go
index a74e37a..39a8c25 100644
--- a/epub_test.go
+++ b/epub_test.go
@@ -850,9 +850,10 @@ func TestManifestItems(t *testing.T) {
 
 	testImageFromURLSource := server.URL + "/gophercolor16x16.png"
 	testManifestItems := []string{
+		`id="id18a490af-f1fc-5ee4-a449-5c80f646a659" href="images/image0003.png" media-type="image/png"></item>`,
 		`id="id5857b58e-9d4f-5b23-ad10-d2644bb66023" href="images/filename with space.png" media-type="image/png"></item>`,
 		`id="id72c19376-e8fb-584c-9dbe-abc447874747" href="images/testfromfile.png" media-type="image/png"></item>`,
-		`id="id971cabb4-8f27-530a-b2fc-24044798f8a7" href="images/image0005.png" media-type="image/png"></item>`,
+		`id="ide10ba9f7-2ca1-5db1-8b0c-cbdf809c8372" href="images/image0006.png" media-type="image/png"></item>`,
 		`id="ide5dc5e63-8586-5ff2-94d9-037b0543ac24" href="images/gophercolor16x16.png" media-type="image/png"></item>`,
 		`id="idfbc147f0-b6fd-5f0f-9d96-69f1c80e2ec6" href="images/01filenametest.png" media-type="image/png"></item>`,
 		`id="nav" href="nav.xhtml" media-type="application/xhtml+xml" properties="nav"></item>`,
@@ -871,6 +872,11 @@ func TestManifestItems(t *testing.T) {
 		t.Error(err)
 	}
 
+	_, err = e.AddImage(testImageFromFileSource, "")
+	if err != nil {
+		t.Error(err)
+	}
+
 	// In particular, we want to test these next two, which will be modified by fixXMLId()
 	_, err = e.AddImage(testImageFromFileSource, testNumberFilenameStart)
 	if err != nil {