--- a/tests/test-notify-changegroup.t	Wed Oct 15 15:13:43 2014 -0400
+++ b/tests/test-notify-changegroup.t	Wed Oct 15 15:35:59 2014 -0400
@@ -39,7 +39,7 @@
 push
 
   $ hg --traceback --cwd b push ../a 2>&1 |
-  >     python -c 'import sys,re; print re.sub("\n\t", " ", sys.stdin.read()),'
+  >     $PYTHON -c 'import sys,re; print re.sub("\n\t", " ", sys.stdin.read()),'
   pushing to ../a
   searching for changes
   adding changesets
@@ -92,7 +92,7 @@
 unbundle with correct source
 
   $ hg --config notify.sources=unbundle --cwd a unbundle ../test.hg 2>&1 |
-  >     python -c 'import sys,re; print re.sub("\n\t", " ", sys.stdin.read()),'
+  >     $PYTHON -c 'import sys,re; print re.sub("\n\t", " ", sys.stdin.read()),'
   adding changesets
   adding manifests
   adding file changes
@@ -167,7 +167,7 @@
 push
 
   $ hg --traceback --cwd b --config notify.fromauthor=True push ../a 2>&1 |
-  >     python -c 'import sys,re; print re.sub("\n\t", " ", sys.stdin.read()),'
+  >     $PYTHON -c 'import sys,re; print re.sub("\n\t", " ", sys.stdin.read()),'
   pushing to ../a
   searching for changes
   adding changesets