diff --git a/src/test/java/com/google/devtools/build/lib/syntax/EvaluationTest.java b/src/test/java/com/google/devtools/build/lib/syntax/EvaluationTest.java
index 3fd5508..b2bfaec 100644
--- a/src/test/java/com/google/devtools/build/lib/syntax/EvaluationTest.java
+++ b/src/test/java/com/google/devtools/build/lib/syntax/EvaluationTest.java
@@ -427,7 +427,7 @@
   public void testListComprehensionOnDictionaryCompositeExpression() throws Exception {
     exec(parseFile("d = {1:'a',2:'b'}\n"
                   + "l = [d[x] for x in d]"), env);
-    assertEquals("[a, b]", env.lookup("l").toString());
+    assertEquals("[\"a\", \"b\"]", EvalUtils.prettyPrintValue(env.lookup("l")));
   }
 
   @Test
diff --git a/src/test/java/com/google/devtools/build/lib/syntax/SkylarkEvaluationTest.java b/src/test/java/com/google/devtools/build/lib/syntax/SkylarkEvaluationTest.java
index 633744c..65996d8 100644
--- a/src/test/java/com/google/devtools/build/lib/syntax/SkylarkEvaluationTest.java
+++ b/src/test/java/com/google/devtools/build/lib/syntax/SkylarkEvaluationTest.java
@@ -816,6 +816,12 @@
     assertEquals("a1", env.lookup("v"));
   }
 
+  @Test
+  public void testSingletonTuple() throws Exception {
+    exec(parseFileForSkylark("v = (1,)"), env);
+    assertEquals("(1,)", env.lookup("v").toString());
+  }
+
   @SuppressWarnings("unchecked")
   @Test
   public void testDirFindsClassObjectFields() throws Exception {