diff --git a/scripts/generate-dev-bundle.sh b/scripts/generate-dev-bundle.sh
index 8e0de641e8..792539fe66 100755
--- a/scripts/generate-dev-bundle.sh
+++ b/scripts/generate-dev-bundle.sh
@@ -70,9 +70,8 @@ case $OS in
         ;;
 esac
 
-
 if [ $OS = "macos" ] && [ "$(uname -m)" = "arm64" ] ; then
-  MONGO_NAME="mongodb-${OS}-x86_64-${MONGO_VERSION}"
+  MONGO_NAME="mongodb-${OS}-arm64-${MONGO_VERSION}"
 elif [ $OS = "linux" ] && [ "$ARCH" = "aarch64" ] ; then
   MONGO_NAME="mongodb-linux-aarch64-ubuntu2204-${MONGO_VERSION}"
 else
@@ -84,6 +83,13 @@ MONGO_URL="${MONGO_BASE_URL}/${MONGO_TGZ}"
 echo "Downloading Mongo from ${MONGO_URL}"
 curl -L "${MONGO_URL}" | tar zx
 
+# The tarball outputs as folder name "mongodb-macos-aarch64-X.X.X" even though the URL and the tarball name suggest "mongodb-macos-arm64-X.X.X"
+# So we need to rename the folder to match the expected folder name
+# Watch out for newer versions of the tarball that might already be named correctly
+if [ $OS = "macos" ] && [ "$(uname -m)" = "arm64" ] ; then
+  MONGO_NAME=$(echo "$MONGO_NAME" | sed 's/arm64/aarch64/g')
+fi
+
 # Put Mongo binaries in the right spot (mongodb/bin)
 mkdir -p "mongodb/bin"
 mv "${MONGO_NAME}/bin/mongod" "mongodb/bin"
diff --git a/tools/runners/run-mongo.js b/tools/runners/run-mongo.js
index f96a126562..5e981334aa 100644
--- a/tools/runners/run-mongo.js
+++ b/tools/runners/run-mongo.js
@@ -1,3 +1,4 @@
+import { loadIsopackage } from '../tool-env/isopackets.js';
 import { MongoExitCodes } from '../utils/mongo-exit-codes';
 var files = require('../fs/files');
 var utils = require('../utils/utils.js');
@@ -5,7 +6,6 @@ var fiberHelpers = require('../utils/fiber-helpers.js');
 var runLog = require('./run-log.js');
 var child_process = require('child_process');
 var _ = require('underscore');
-import { loadIsopackage } from '../tool-env/isopackets.js';
 var Console = require('../console/console.js').Console;
 
 // Given a Mongo URL, open an interactive Mongo shell on this terminal
@@ -51,11 +51,6 @@ function spawnMongod(mongodPath, port, dbPath, replSetName) {
     args.push('--storageEngine', 'mmapv1', '--smallfiles');
   }
 
-  // run with rosetta on mac m1
-  if (process.platform === 'darwin' && process.arch === 'arm64') {
-    args = ['-x86_64', mongodPath, ...args];
-    mongodPath = 'arch';
-  }
   return child_process.spawn(mongodPath, args, {
     // Apparently in some contexts, Mongo crashes if your locale isn't set up
     // right. I wasn't able to reproduce it, but many people on #4019