diff --git a/gson/src/main/java/com/google/gson/internal/LinkedTreeMap.java b/gson/src/main/java/com/google/gson/internal/LinkedTreeMap.java
index 7ba7a84e24..099dd573c0 100644
--- a/gson/src/main/java/com/google/gson/internal/LinkedTreeMap.java
+++ b/gson/src/main/java/com/google/gson/internal/LinkedTreeMap.java
@@ -43,7 +43,13 @@
 @SuppressWarnings("serial") // ignore warning about missing serialVersionUID
 public final class LinkedTreeMap<K, V> extends AbstractMap<K, V> implements Serializable {
   @SuppressWarnings({"unchecked", "rawtypes"}) // to avoid Comparable<Comparable<Comparable<...>>>
-  private static final Comparator<Comparable> NATURAL_ORDER = Comparator.naturalOrder();
+  private static final Comparator<Comparable> NATURAL_ORDER =
+      new Comparator<Comparable>() {
+        @Override
+        public int compare(Comparable a, Comparable b) {
+          return a.compareTo(b);
+        }
+      };
 
   private final Comparator<? super K> comparator;
   private final boolean allowNullValues;
diff --git a/gson/src/main/java/com/google/gson/internal/NonNullElementWrapperList.java b/gson/src/main/java/com/google/gson/internal/NonNullElementWrapperList.java
index ae12d4c246..45a9c2905b 100644
--- a/gson/src/main/java/com/google/gson/internal/NonNullElementWrapperList.java
+++ b/gson/src/main/java/com/google/gson/internal/NonNullElementWrapperList.java
@@ -19,11 +19,9 @@
 import java.util.AbstractList;
 import java.util.ArrayList;
 import java.util.Collection;
-import java.util.Comparator;
 import java.util.List;
 import java.util.Objects;
 import java.util.RandomAccess;
-import java.util.Spliterator;
 
 /**
  * {@link List} which wraps another {@code List} but prevents insertion of {@code null} elements.
@@ -109,16 +107,6 @@ public int lastIndexOf(Object o) {
     return delegate.lastIndexOf(o);
   }
 
-  @Override
-  public Spliterator<E> spliterator() {
-    return delegate.spliterator();
-  }
-
-  @Override
-  public void sort(Comparator<? super E> c) {
-    delegate.sort(c);
-  }
-
   @Override
   public Object[] toArray() {
     return delegate.toArray();
@@ -138,4 +126,7 @@ public boolean equals(Object o) {
   public int hashCode() {
     return delegate.hashCode();
   }
+
+  // Maybe also delegate List#sort and List#spliterator in the future, but that
+  // requires Android API level 24
 }
diff --git a/gson/src/main/java/com/google/gson/internal/reflect/ReflectionHelper.java b/gson/src/main/java/com/google/gson/internal/reflect/ReflectionHelper.java
index ceaf9be742..7a845ce515 100644
--- a/gson/src/main/java/com/google/gson/internal/reflect/ReflectionHelper.java
+++ b/gson/src/main/java/com/google/gson/internal/reflect/ReflectionHelper.java
@@ -128,8 +128,8 @@ public static String constructorToString(Constructor<?> constructor) {
     return stringBuilder.toString();
   }
 
-  // Ideally parameter type would be java.lang.reflect.Executable, but that was added in Android API
-  // level 26
+  // Ideally parameter type would be java.lang.reflect.Executable, but that was added
+  // in Android API level 26
   private static void appendExecutableParameters(
       AccessibleObject executable, StringBuilder stringBuilder) {
     stringBuilder.append('(');