diff --git a/.muse b/.muse
index 8bc9eec92d..68a6267a82 100644
--- a/.muse
+++ b/.muse
@@ -1,5 +1,5 @@
 # prefer to build with this environment
-ENVSET p054
+ENVSET p051
 # add these to python path
 PYTHONPATH Trigger/python
 # add Offline/bin to path