diff --git a/android/guava-tests/benchmark/com/google/common/collect/InternersBenchmark.java b/android/guava-tests/benchmark/com/google/common/collect/InternersBenchmark.java
index 2b7ef36c700a..2b6a8c011488 100644
--- a/android/guava-tests/benchmark/com/google/common/collect/InternersBenchmark.java
+++ b/android/guava-tests/benchmark/com/google/common/collect/InternersBenchmark.java
@@ -28,7 +28,7 @@ public class InternersBenchmark {
   int weakInterner(int reps) {
     Interner<String> interner = Interners.newWeakInterner();
     for (int i = 0; i < reps; i++) {
-      interner.intern(Double.toHexString(Math.random()));
+      String unused = interner.intern(Double.toHexString(Math.random()));
     }
     return reps;
   }
@@ -37,7 +37,7 @@ int weakInterner(int reps) {
   int strongInterner(int reps) {
     Interner<String> interner = Interners.newStrongInterner();
     for (int i = 0; i < reps; i++) {
-      interner.intern(Double.toHexString(Math.random()));
+      String unused = interner.intern(Double.toHexString(Math.random()));
     }
     return reps;
   }
diff --git a/android/guava-tests/test/com/google/common/collect/BenchmarkHelpers.java b/android/guava-tests/test/com/google/common/collect/BenchmarkHelpers.java
index 65d2ef6f46e7..0a524fca4475 100644
--- a/android/guava-tests/test/com/google/common/collect/BenchmarkHelpers.java
+++ b/android/guava-tests/test/com/google/common/collect/BenchmarkHelpers.java
@@ -386,7 +386,7 @@ public enum InternerImpl implements InternerImplEnum {
       public <E> Interner<E> create(Collection<E> contents) {
         Interner<E> interner = Interners.newWeakInterner();
         for (E e : contents) {
-          interner.intern(e);
+          E unused = interner.intern(e);
         }
         return interner;
       }
@@ -396,7 +396,7 @@ public <E> Interner<E> create(Collection<E> contents) {
       public <E> Interner<E> create(Collection<E> contents) {
         Interner<E> interner = Interners.newStrongInterner();
         for (E e : contents) {
-          interner.intern(e);
+          E unused = interner.intern(e);
         }
         return interner;
       }
diff --git a/android/guava/src/com/google/common/collect/Interner.java b/android/guava/src/com/google/common/collect/Interner.java
index bfc2035f101b..d98632598602 100644
--- a/android/guava/src/com/google/common/collect/Interner.java
+++ b/android/guava/src/com/google/common/collect/Interner.java
@@ -17,7 +17,6 @@
 package com.google.common.collect;
 
 import com.google.common.annotations.GwtIncompatible;
-import com.google.errorprone.annotations.CanIgnoreReturnValue;
 import com.google.errorprone.annotations.DoNotMock;
 
 /**
@@ -47,6 +46,5 @@ public interface Interner<E> {
    *
    * @throws NullPointerException if {@code sample} is null
    */
-  @CanIgnoreReturnValue // TODO(cpovirk): Consider removing this?
   E intern(E sample);
 }
diff --git a/guava-tests/benchmark/com/google/common/collect/InternersBenchmark.java b/guava-tests/benchmark/com/google/common/collect/InternersBenchmark.java
index 2b7ef36c700a..2b6a8c011488 100644
--- a/guava-tests/benchmark/com/google/common/collect/InternersBenchmark.java
+++ b/guava-tests/benchmark/com/google/common/collect/InternersBenchmark.java
@@ -28,7 +28,7 @@ public class InternersBenchmark {
   int weakInterner(int reps) {
     Interner<String> interner = Interners.newWeakInterner();
     for (int i = 0; i < reps; i++) {
-      interner.intern(Double.toHexString(Math.random()));
+      String unused = interner.intern(Double.toHexString(Math.random()));
     }
     return reps;
   }
@@ -37,7 +37,7 @@ int weakInterner(int reps) {
   int strongInterner(int reps) {
     Interner<String> interner = Interners.newStrongInterner();
     for (int i = 0; i < reps; i++) {
-      interner.intern(Double.toHexString(Math.random()));
+      String unused = interner.intern(Double.toHexString(Math.random()));
     }
     return reps;
   }
diff --git a/guava-tests/test/com/google/common/collect/BenchmarkHelpers.java b/guava-tests/test/com/google/common/collect/BenchmarkHelpers.java
index 65d2ef6f46e7..0a524fca4475 100644
--- a/guava-tests/test/com/google/common/collect/BenchmarkHelpers.java
+++ b/guava-tests/test/com/google/common/collect/BenchmarkHelpers.java
@@ -386,7 +386,7 @@ public enum InternerImpl implements InternerImplEnum {
       public <E> Interner<E> create(Collection<E> contents) {
         Interner<E> interner = Interners.newWeakInterner();
         for (E e : contents) {
-          interner.intern(e);
+          E unused = interner.intern(e);
         }
         return interner;
       }
@@ -396,7 +396,7 @@ public <E> Interner<E> create(Collection<E> contents) {
       public <E> Interner<E> create(Collection<E> contents) {
         Interner<E> interner = Interners.newStrongInterner();
         for (E e : contents) {
-          interner.intern(e);
+          E unused = interner.intern(e);
         }
         return interner;
       }
diff --git a/guava/src/com/google/common/collect/Interner.java b/guava/src/com/google/common/collect/Interner.java
index bfc2035f101b..d98632598602 100644
--- a/guava/src/com/google/common/collect/Interner.java
+++ b/guava/src/com/google/common/collect/Interner.java
@@ -17,7 +17,6 @@
 package com.google.common.collect;
 
 import com.google.common.annotations.GwtIncompatible;
-import com.google.errorprone.annotations.CanIgnoreReturnValue;
 import com.google.errorprone.annotations.DoNotMock;
 
 /**
@@ -47,6 +46,5 @@ public interface Interner<E> {
    *
    * @throws NullPointerException if {@code sample} is null
    */
-  @CanIgnoreReturnValue // TODO(cpovirk): Consider removing this?
   E intern(E sample);
 }