diff --git a/java/com/google/gerrit/extensions/api/changes/FileApi.java b/java/com/google/gerrit/extensions/api/changes/FileApi.java
index 89dc269f8b..39cf2b764d 100644
--- a/java/com/google/gerrit/extensions/api/changes/FileApi.java
+++ b/java/com/google/gerrit/extensions/api/changes/FileApi.java
@@ -39,6 +39,9 @@ public interface FileApi {
    */
   DiffRequest diffRequest() throws RestApiException;
 
+  /** Set the file reviewed or not reviewed */
+  void setReviewed(boolean reviewed) throws RestApiException;
+
   abstract class DiffRequest {
     private String base;
     private Integer context;
@@ -123,5 +126,10 @@ public interface FileApi {
     public DiffRequest diffRequest() throws RestApiException {
       throw new NotImplementedException();
     }
+
+    @Override
+    public void setReviewed(boolean reviewed) throws RestApiException {
+      throw new NotImplementedException();
+    }
   }
 }
diff --git a/java/com/google/gerrit/server/api/changes/FileApiImpl.java b/java/com/google/gerrit/server/api/changes/FileApiImpl.java
index 6e18bb8015..f2d0ef834a 100644
--- a/java/com/google/gerrit/server/api/changes/FileApiImpl.java
+++ b/java/com/google/gerrit/server/api/changes/FileApiImpl.java
@@ -18,11 +18,13 @@ import static com.google.gerrit.server.api.ApiUtil.asRestApiException;
 
 import com.google.gerrit.extensions.api.changes.FileApi;
 import com.google.gerrit.extensions.common.DiffInfo;
+import com.google.gerrit.extensions.common.Input;
 import com.google.gerrit.extensions.restapi.BinaryResult;
 import com.google.gerrit.extensions.restapi.RestApiException;
 import com.google.gerrit.server.change.FileResource;
 import com.google.gerrit.server.restapi.change.GetContent;
 import com.google.gerrit.server.restapi.change.GetDiff;
+import com.google.gerrit.server.restapi.change.Reviewed;
 import com.google.inject.Inject;
 import com.google.inject.assistedinject.Assisted;
 
@@ -33,12 +35,21 @@ class FileApiImpl implements FileApi {
 
   private final GetContent getContent;
   private final GetDiff getDiff;
+  private final Reviewed.PutReviewed putReviewed;
+  private final Reviewed.DeleteReviewed deleteReviewed;
   private final FileResource file;
 
   @Inject
-  FileApiImpl(GetContent getContent, GetDiff getDiff, @Assisted FileResource file) {
+  FileApiImpl(
+      GetContent getContent,
+      GetDiff getDiff,
+      Reviewed.PutReviewed putReviewed,
+      Reviewed.DeleteReviewed deleteReviewed,
+      @Assisted FileResource file) {
     this.getContent = getContent;
     this.getDiff = getDiff;
+    this.putReviewed = putReviewed;
+    this.deleteReviewed = deleteReviewed;
     this.file = file;
   }
 
@@ -88,6 +99,19 @@ class FileApiImpl implements FileApi {
     };
   }
 
+  @Override
+  public void setReviewed(boolean reviewed) throws RestApiException {
+    try {
+      if (reviewed) {
+        putReviewed.apply(file, new Input());
+      } else {
+        deleteReviewed.apply(file, new Input());
+      }
+    } catch (Exception e) {
+      throw asRestApiException(String.format("Cannot set %sreviewed", reviewed ? "" : "un"), e);
+    }
+  }
+
   private DiffInfo get(DiffRequest r) throws RestApiException {
     if (r.getBase() != null) {
       getDiff.setBase(r.getBase());
diff --git a/javatests/com/google/gerrit/acceptance/api/revision/RevisionIT.java b/javatests/com/google/gerrit/acceptance/api/revision/RevisionIT.java
index bde042fe93..4594689372 100644
--- a/javatests/com/google/gerrit/acceptance/api/revision/RevisionIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/revision/RevisionIT.java
@@ -959,6 +959,21 @@ public class RevisionIT extends AbstractDaemonTest {
     assertThat(gApi.changes().id(r.getChangeId()).current().reviewed()).isEmpty();
   }
 
+  @Test
+  public void setUnsetReviewedFlagByFileApi() throws Exception {
+    PushOneCommit push = pushFactory.create(db, admin.getIdent(), testRepo);
+    PushOneCommit.Result r = push.to("refs/for/master");
+
+    gApi.changes().id(r.getChangeId()).current().file(PushOneCommit.FILE_NAME).setReviewed(true);
+
+    assertThat(Iterables.getOnlyElement(gApi.changes().id(r.getChangeId()).current().reviewed()))
+        .isEqualTo(PushOneCommit.FILE_NAME);
+
+    gApi.changes().id(r.getChangeId()).current().file(PushOneCommit.FILE_NAME).setReviewed(false);
+
+    assertThat(gApi.changes().id(r.getChangeId()).current().reviewed()).isEmpty();
+  }
+
   @Test
   public void mergeable() throws Exception {
     ObjectId initial = repo().exactRef(HEAD).getLeaf().getObjectId();