diff --git a/Mac/BuildScript/scripts/postflight.framework b/Mac/BuildScript/scripts/postflight.framework
index b796a102be3..2911e272e35 100755
--- a/Mac/BuildScript/scripts/postflight.framework
+++ b/Mac/BuildScript/scripts/postflight.framework
@@ -6,28 +6,27 @@
 PYVER="@PYVER@"
 FWK="/Library/Frameworks/Python.framework/Versions/@PYVER@"
 
-"${FWK}/bin/python" -Wi -tt \
+"${FWK}/bin/python@PYVER@" -Wi -tt \
     "${FWK}/lib/python${PYVER}/compileall.py" \
     -x badsyntax -x site-packages \
     "${FWK}/lib/python${PYVER}"
 
-"${FWK}/bin/python" -Wi -tt -O \
+"${FWK}/bin/python@PYVER@" -Wi -tt -O \
     "${FWK}/lib/python${PYVER}/compileall.py" \
     -x badsyntax -x site-packages \
     "${FWK}/lib/python${PYVER}"
 
-"${FWK}/bin/python" -Wi -tt \
+"${FWK}/bin/python@PYVER@" -Wi -tt \
     "${FWK}/lib/python${PYVER}/compileall.py" \
     -x badsyntax -x site-packages \
     "${FWK}/Mac/Tools"
 
-"${FWK}/bin/python" -Wi -tt -O \
+"${FWK}/bin/python@PYVER@" -Wi -tt -O \
     "${FWK}/lib/python${PYVER}/compileall.py" \
     -x badsyntax -x site-packages \
     "${FWK}/Mac/Tools"
 
-
-chown -R admin "${FWK}"
+chgrp -R admin "${FWK}"
 chmod -R g+w "${FWK}"
 
 exit 0