1 files changed, 2 insertions, 1 deletions
diff --git a/guava-tests/test/com/google/common/collect/LegacyComparable.java b/guava-tests/test/com/google/common/collect/LegacyComparable.java
index 8b0c9620c..05a6607a4 100644
--- a/guava-tests/test/com/google/common/collect/LegacyComparable.java
+++ b/guava-tests/test/com/google/common/collect/LegacyComparable.java
@@ -19,6 +19,7 @@ package com.google.common.collect;
 import com.google.common.annotations.GwtCompatible;
 import java.io.Serializable;
 import java.util.Arrays;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
  * A class that implements {@code Comparable} without generics, such as those found in libraries
@@ -51,7 +52,7 @@ class LegacyComparable implements Comparable, Serializable {
   }
 
   @Override
-  public boolean equals(Object object) {
+  public boolean equals(@Nullable Object object) {
     if (object instanceof LegacyComparable) {
       LegacyComparable that = (LegacyComparable) object;
       return this.value.equals(that.value);