diff --git a/src/applications/conduit/method/diffusion/ConduitAPI_diffusion_getrecentcommitsbypath_Method.php b/src/applications/conduit/method/diffusion/ConduitAPI_diffusion_getrecentcommitsbypath_Method.php
index c46c49ef74..a5d9014333 100644
--- a/src/applications/conduit/method/diffusion/ConduitAPI_diffusion_getrecentcommitsbypath_Method.php
+++ b/src/applications/conduit/method/diffusion/ConduitAPI_diffusion_getrecentcommitsbypath_Method.php
@@ -1,67 +1,73 @@
 <?php
 
 /*
  * Copyright 2012 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 
 /**
  * @group conduit
  */
 final class ConduitAPI_diffusion_getrecentcommitsbypath_Method
   extends ConduitAPIMethod {
 
-  const RESULT_LIMIT = 10;
+  const DEFAULT_LIMIT = 10;
 
   public function getMethodDescription() {
     return "Get commit identifiers for recent commits affecting a given path.";
   }
 
   public function defineParamTypes() {
     return array(
       'callsign' => 'required string',
       'path' => 'required string',
+      'limit' => 'optional int',
     );
   }
 
   public function defineReturnType() {
     return 'nonempty list<string>';
   }
 
   public function defineErrorTypes() {
     return array(
     );
   }
 
   protected function execute(ConduitAPIRequest $request) {
     $drequest = DiffusionRequest::newFromDictionary(
       array(
         'callsign'  => $request->getValue('callsign'),
         'path'      => $request->getValue('path'),
       ));
 
+    $limit = nonempty(
+      $request->getValue('limit'),
+      self::DEFAULT_LIMIT
+    );
+
     $history = DiffusionHistoryQuery::newFromDiffusionRequest($drequest)
-    ->setLimit(self::RESULT_LIMIT)
+    ->setLimit($limit)
     ->needDirectChanges(true)
     ->needChildChanges(true)
     ->loadHistory();
 
     $raw_commit_identifiers = mpull($history, 'getCommitIdentifier');
     $result = array();
     foreach ($raw_commit_identifiers as $id) {
       $result[] = 'r'.$request->getValue('callsign').$id;
     }
     return $result;
   }
 }