diff --git a/gitiles-servlet/src/test/java/com/google/gitiles/RevisionParserTest.java b/gitiles-servlet/src/test/java/com/google/gitiles/RevisionParserTest.java
index 097ef0c..b0be155 100644
--- a/gitiles-servlet/src/test/java/com/google/gitiles/RevisionParserTest.java
+++ b/gitiles-servlet/src/test/java/com/google/gitiles/RevisionParserTest.java
@@ -115,6 +115,7 @@
 
   public void testParseNonVisibleCommitSha() throws Exception {
     RevCommit other = repo.commit().create();
+    repo.branch("master").commit().create();
     assertEquals(null, parser.parse(other.name()));
 
     repo.branch("other").update(other);
@@ -196,6 +197,7 @@
             42),
         parser.parse(parent.name() + "^!"));
 
+    repo.update("refs/tags/tag", repo.tag("tag", commit));
     assertEquals(
         new Result(
             Revision.peeled("tag", commit),
diff --git a/gitiles-servlet/src/test/java/com/google/gitiles/ViewFilterTest.java b/gitiles-servlet/src/test/java/com/google/gitiles/ViewFilterTest.java
index 8224036..be0978d 100644
--- a/gitiles-servlet/src/test/java/com/google/gitiles/ViewFilterTest.java
+++ b/gitiles-servlet/src/test/java/com/google/gitiles/ViewFilterTest.java
@@ -64,6 +64,7 @@
     RevCommit master = repo.branch("refs/heads/master").commit().parent(parent).create();
     String hex = master.name();
     String hexBranch = hex.substring(0, 10);
+    repo.branch(hexBranch).commit().create();
 
     assertEquals(Type.LOG, getView("/repo/+/master").getType());
     assertEquals(Type.LOG, getView("/repo/+/" + hexBranch).getType());
@@ -187,6 +188,7 @@
   }
 
   public void testMultipleSlashes() throws Exception {
+    repo.branch("refs/heads/master").commit().create();
     assertEquals(Type.HOST_INDEX, getView("//").getType());
     assertEquals(Type.REPOSITORY_INDEX, getView("//repo").getType());
     assertEquals(Type.REPOSITORY_INDEX, getView("//repo//").getType());