diff --git a/keyserver/src/creators/message-report-creator.js b/keyserver/src/creators/message-report-creator.js
--- a/keyserver/src/creators/message-report-creator.js
+++ b/keyserver/src/creators/message-report-creator.js
@@ -36,6 +36,7 @@
   viewer: Viewer,
   request: MessageReportCreationRequest,
 ): Promise<RawMessageInfo[]> {
+  const keyserverAdminIDPromise = fetchKeyserverAdminID();
   const {
     reportedMessageText,
     reporterUsername,
@@ -51,19 +52,25 @@
     reportedMessageText,
   );
   const time = Date.now();
-  const result = await createMessages(viewer, [
-    {
-      type: messageTypes.TEXT,
-      threadID: commbotThreadID,
-      creatorID: commbot.userID,
-      time,
-      text: reportMessage,
-    },
+  const [messageResult, keyserverAdminID] = await Promise.all([
+    createMessages(viewer, [
+      {
+        type: messageTypes.TEXT,
+        threadID: commbotThreadID,
+        creatorID: commbot.userID,
+        time,
+        text: reportMessage,
+      },
+    ]),
+    keyserverAdminIDPromise,
   ]);
-  if (result.length === 0) {
+  if (messageResult.length === 0) {
     throw new ServerError('message_report_failed');
   }
-  return result;
+  if (viewer.userID === keyserverAdminID) {
+    return messageResult;
+  }
+  return [];
 }
 
 async function fetchMessageReportData(
diff --git a/lib/reducers/message-reducer.js b/lib/reducers/message-reducer.js
--- a/lib/reducers/message-reducer.js
+++ b/lib/reducers/message-reducer.js
@@ -1004,15 +1004,17 @@
       newThreadInfos,
     );
   } else if (action.type === sendMessageReportActionTypes.success) {
-    return mergeNewMessages(
-      messageStore,
-      [action.payload.messageInfo],
-      {
-        [(action.payload.messageInfo.threadID: string)]:
-          messageTruncationStatus.UNCHANGED,
-      },
-      newThreadInfos,
-    );
+    const { messageInfo } = action.payload;
+    if (messageInfo) {
+      return mergeNewMessages(
+        messageStore,
+        [messageInfo],
+        {
+          [(messageInfo.threadID: string)]: messageTruncationStatus.UNCHANGED,
+        },
+        newThreadInfos,
+      );
+    }
   } else if (action.type === legacyKeyserverRegisterActionTypes.success) {
     const truncationStatuses: { [string]: MessageTruncationStatus } = {};
     for (const messageInfo of action.payload.rawMessageInfos) {
diff --git a/lib/types/message-report-types.js b/lib/types/message-report-types.js
--- a/lib/types/message-report-types.js
+++ b/lib/types/message-report-types.js
@@ -7,5 +7,5 @@
 };
 
 export type MessageReportCreationResult = {
-  +messageInfo: RawMessageInfo,
+  +messageInfo: ?RawMessageInfo,
 };
diff --git a/lib/types/validators/message-report-validators.js b/lib/types/validators/message-report-validators.js
--- a/lib/types/validators/message-report-validators.js
+++ b/lib/types/validators/message-report-validators.js
@@ -1,10 +1,12 @@
 // @flow
 
-import type { TInterface } from 'tcomb';
+import t, { type TInterface } from 'tcomb';
 
 import { tShape } from '../../utils/validation-utils.js';
 import { type MessageReportCreationResult } from '../message-report-types.js';
 import { rawMessageInfoValidator } from '../message-types.js';
 
 export const messageReportCreationResultValidator: TInterface<MessageReportCreationResult> =
-  tShape<MessageReportCreationResult>({ messageInfo: rawMessageInfoValidator });
+  tShape<MessageReportCreationResult>({
+    messageInfo: t.maybe(rawMessageInfoValidator),
+  });