diff --git a/CHANGELOG.md b/CHANGELOG.md
index 02f0500..cc38b3b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 
 ## [Unreleased]
 
+## [v1.2.4]
+
+### Fixed
+- **CUMULUS-953** - The lambdaArn parameter will accept a Lambda ARN or a Lambda
+  function name.
+
 ## [v1.2.3]
 
 ### Fixed
diff --git a/index.js b/index.js
index d57b68a..7b1bd1e 100644
--- a/index.js
+++ b/index.js
@@ -1,5 +1,7 @@
+/* eslint max-len: "off" */
+
 'use strict';
-/* eslint-disable no-console, max-len */
+
 const https = require('https');
 const path = require('path');
 const execSync = require('child_process').execSync;
@@ -15,6 +17,24 @@ const log = new Logger();
 const region = process.env.AWS_DEFAULT_REGION || 'us-east-1';
 AWS.config.update({ region: region });
 
+// eslint-disable-next-line require-jsdoc
+const isLambdaFunctionArn = (id) => id.startsWith('arn:aws:lambda');
+
+// eslint-disable-next-line require-jsdoc
+function getFunctionName(lambdaId) {
+  if (isLambdaFunctionArn(lambdaId)) {
+    const FUNCTION_NAME_FIELD = 6;
+
+    return lambdaId.split(':')[FUNCTION_NAME_FIELD];
+  }
+
+  return lambdaId;
+}
+
+// eslint-disable-next-line require-jsdoc
+const getLogSenderFromLambdaId = (lambdaId) =>
+  `cumulus-ecs-task/${getFunctionName(lambdaId)}`;
+
 /**
  * Download a URL to file
  *
@@ -253,14 +273,7 @@ async function runTask(options) {
   const taskDir = options.taskDirectory;
   const workDir = options.workDirectory;
 
-  const lambdaFunctionNameMatch = lambdaArn.match(/:function:([^:]+)/);
-  if (lambdaFunctionNameMatch) {
-    log.sender = `cumulus-ecs-task/${lambdaFunctionNameMatch[1]}`;
-  }
-  else {
-    const err = new TypeError(`Unable to determine lambda function name from ${lambdaArn}`);
-    log.error(`Unable to determine lambda function name from ${lambdaArn}`, err);
-  }
+  log.sender = getLogSenderFromLambdaId(lambdaArn);
 
   // the cumulus-message-adapter dir is in an unexpected place,
   // so tell the adapter where to find it
@@ -308,14 +321,7 @@ async function runServiceFromSQS(options) {
   const workDir = options.workDirectory;
   const runForever = options.runForever || true;
 
-  const lambdaFunctionNameMatch = lambdaArn.match(/:function:([^:]+)/);
-  if (lambdaFunctionNameMatch) {
-    log.sender = `cumulus-ecs-task/${lambdaFunctionNameMatch[1]}`;
-  }
-  else {
-    const err = new TypeError(`Unable to determine lambda function name from ${lambdaArn}`);
-    log.error(`Unable to determine lambda function name from ${lambdaArn}`, err);
-  }
+  log.sender = getLogSenderFromLambdaId(lambdaArn);
 
   // the cumulus-message-adapter dir is in an unexpected place,
   // so tell the adapter where to find it
@@ -391,14 +397,7 @@ async function runServiceFromActivity(options) {
 
   let runForever = true;
 
-  const lambdaFunctionNameMatch = lambdaArn.match(/:function:([^:]+)/);
-  if (lambdaFunctionNameMatch) {
-    log.sender = `cumulus-ecs-task/${lambdaFunctionNameMatch[1]}`;
-  }
-  else {
-    const err = new TypeError(`Unable to determine lambda function name from ${lambdaArn}`);
-    log.error(`Unable to determine lambda function name from ${lambdaArn}`, err);
-  }
+  log.sender = getLogSenderFromLambdaId(lambdaArn);
 
   // the cumulus-message-adapter dir is in an unexpected place,
   // so tell the adapter where to find it
diff --git a/package.json b/package.json
index 5793b0c..6ab1ea6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@cumulus/cumulus-ecs-task",
-  "version": "1.2.3",
+  "version": "1.2.4",
   "description": "Run lambda functions in ECS",
   "main": "index.js",
   "bin": {