diff --git a/var/spack/repos/builtin/packages/xpyb/package.py b/var/spack/repos/builtin/packages/py-xpyb/package.py
similarity index 98%
rename from var/spack/repos/builtin/packages/xpyb/package.py
rename to var/spack/repos/builtin/packages/py-xpyb/package.py
index ff9f0f93334..49c6343c452 100644
--- a/var/spack/repos/builtin/packages/xpyb/package.py
+++ b/var/spack/repos/builtin/packages/py-xpyb/package.py
@@ -25,7 +25,7 @@
 from spack import *
 
 
-class Xpyb(Package):
+class PyXpyb(Package):
     """xpyb provides a Python binding to the X Window System protocol
     via libxcb."""