diff --git a/src/macos-build.sh b/src/macos-build.sh
index fcb7f7d3..f575a0fe 100755
--- a/src/macos-build.sh
+++ b/src/macos-build.sh
@@ -3,7 +3,7 @@ rmdir /q /s build
 rmdir /q /s dist
 rm -rf gam-$1-macos.tar.xz
 
-pyinstaller --clean -F --distpath=gam macos-gam.spec
+/Library/Frameworks/Python.framework/Versions/2.7/bin/pyinstaller --clean -F --distpath=gam macos-gam.spec
 cp LICENSE gam
 cp whatsnew.txt gam