diff --git a/build/macos/dmg/3_dist-gimp-apple.sh b/build/macos/dmg/3_dist-gimp-apple.sh
index 8b692ab9b0..f1ff06abab 100644
--- a/build/macos/dmg/3_dist-gimp-apple.sh
+++ b/build/macos/dmg/3_dist-gimp-apple.sh
@@ -139,7 +139,7 @@ cp -r "$BG_PATH" "$DMG_MOUNT/.background.png"
 ln -s /Applications "$DMG_MOUNT/Applications"
 #Ported from https://github.com/salty-salty-studios/first-snow/blob/main/installer/mac/metabuilder.py
 python3 -m venv ds-py3-venv
-source ds-py3-venv/bin/activate
+. ds-py3-venv/bin/activate
 pip install ds_store biplist mac_alias
 python3 <<-EOF
 from datetime import datetime, timezone