diff --git a/gerrit-gwtui/src/main/java/com/google/gerrit/client/groups/GroupApi.java b/gerrit-gwtui/src/main/java/com/google/gerrit/client/groups/GroupApi.java
index ac7e67ed10..b0c1034dc1 100644
--- a/gerrit-gwtui/src/main/java/com/google/gerrit/client/groups/GroupApi.java
+++ b/gerrit-gwtui/src/main/java/com/google/gerrit/client/groups/GroupApi.java
@@ -39,24 +39,46 @@ public class GroupApi {
 
   /** Add members to a group. */
   public static void addMembers(AccountGroup.UUID groupUUID,
-      Set<String> members, AsyncCallback<NativeList<MemberInfo>> cb) {
-    RestApi call = new RestApi(membersBase(groupUUID));
-    MemberInput input = MemberInput.create();
-    for (String member : members) {
-      input.add_member(member);
+      Set<String> members,
+      final AsyncCallback<NativeList<MemberInfo>> cb) {
+    if (members.size() == 1) {
+      addMember(groupUUID,
+          members.iterator().next(),
+          new AsyncCallback<MemberInfo>() {
+            @Override
+            public void onSuccess(MemberInfo result) {
+              cb.onSuccess(NativeList.of(result));
+            }
+
+            @Override
+            public void onFailure(Throwable caught) {
+              cb.onFailure(caught);
+            }
+          });
+    } else {
+      RestApi call = new RestApi(membersBase(groupUUID));
+      MemberInput input = MemberInput.create();
+      for (String member : members) {
+        input.add_member(member);
+      }
+      call.data(input).put(cb);
     }
-    call.data(input).put(cb);
   }
 
   /** Remove members from a group. */
   public static void removeMembers(AccountGroup.UUID groupUUID,
       Set<Account.Id> ids, AsyncCallback<VoidResult> cb) {
-    RestApi call = new RestApi(membersBase(groupUUID));
-    MemberInput input = MemberInput.create();
-    for (Account.Id id : ids) {
-      input.add_member(id.toString());
+    if (ids.size() == 1) {
+      Account.Id u = ids.iterator().next();
+      new RestApi(membersBase(groupUUID) + "/" + u).delete(cb);
+    } else {
+      RestApi call = new RestApi(membersBase(groupUUID));
+      MemberInput input = MemberInput.create();
+      for (Account.Id id : ids) {
+        input.add_member(id.toString());
+      }
+      call.data(input).delete(cb);
     }
-    call.data(input).delete(cb);
   }
 
   private static String membersBase(AccountGroup.UUID groupUUID) {
diff --git a/gerrit-gwtui/src/main/java/com/google/gerrit/client/rpc/NativeList.java b/gerrit-gwtui/src/main/java/com/google/gerrit/client/rpc/NativeList.java
index e820fe060f..969109437e 100644
--- a/gerrit-gwtui/src/main/java/com/google/gerrit/client/rpc/NativeList.java
+++ b/gerrit-gwtui/src/main/java/com/google/gerrit/client/rpc/NativeList.java
@@ -21,6 +21,12 @@ import java.util.List;
 
 /** A read-only list of native JavaScript objects stored in a JSON array. */
 public class NativeList<T extends JavaScriptObject> extends JavaScriptObject {
+  public static <T extends JavaScriptObject> NativeList<T> of(T a) {
+    NativeList<T> list = createArray().cast();
+    list.add(a);
+    return list;
+  }
+
   protected NativeList() {
   }
 
@@ -51,5 +57,6 @@ public class NativeList<T extends JavaScriptObject> extends JavaScriptObject {
 
   public final native int size() /*-{ return this.length; }-*/;
   public final native T get(int i) /*-{ return this[i]; }-*/;
+  public final native void add(T v) /*-{ this.push(v); }-*/;
   private final native void set0(int i, T v) /*-{ this[i] = v; }-*/;
 }