diff --git a/packages/metro-bundler/launchPackager.command b/packages/metro-bundler/launchPackager.command
index cbeefec4..9e12272a 100755
--- a/packages/metro-bundler/launchPackager.command
+++ b/packages/metro-bundler/launchPackager.command
@@ -13,7 +13,7 @@ clear
 
 THIS_DIR=$(dirname "$0")
 pushd "$THIS_DIR/.."
-source packager/packager.sh
+. packager/packager.sh
 popd
 
 echo "Process terminated. Press <enter> to close the window"