1 files changed, 3 insertions, 2 deletions
diff --git a/guava-testlib/test/com/google/common/testing/ArbitraryInstancesTest.java b/guava-testlib/test/com/google/common/testing/ArbitraryInstancesTest.java
index dfd26a0c7..ecca9c873 100644
--- a/guava-testlib/test/com/google/common/testing/ArbitraryInstancesTest.java
+++ b/guava-testlib/test/com/google/common/testing/ArbitraryInstancesTest.java
@@ -131,6 +131,7 @@ import java.util.concurrent.atomic.AtomicReference;
 import java.util.regex.MatchResult;
 import java.util.regex.Pattern;
 import junit.framework.TestCase;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
  * Unit test for {@link ArbitraryInstances}.
@@ -481,7 +482,7 @@ public class ArbitraryInstancesTest extends TestCase {
   }
 
   public static class WithNullConstant {
-    public static final WithNullConstant NULL = null;
+    public static final @Nullable WithNullConstant NULL = null;
 
     private WithNullConstant() {}
   }
@@ -504,7 +505,7 @@ public class ArbitraryInstancesTest extends TestCase {
   private static class FirstConstantIsNull {
     // To test that null constant is ignored
     @SuppressWarnings("unused")
-    public static final FirstConstantIsNull FIRST = null;
+    public static final @Nullable FirstConstantIsNull FIRST = null;
 
     public static final FirstConstantIsNull SECOND = new FirstConstantIsNull();
   }