diff --git a/var/spack/packages/py-pyside/package.py b/var/spack/packages/py-pyside/package.py
index 7528a0bf72b9fee04a5429b9e7925b8aec060163..1fd037d75f560c093911bb3f1a46011a78d4aa6b 100644
--- a/var/spack/packages/py-pyside/package.py
+++ b/var/spack/packages/py-pyside/package.py
@@ -14,7 +14,7 @@ class PyPyside(Package):
     depends_on('qt@:4')
 
 
-    def patch(Self):
+    def patch(self):
         """Undo PySide RPATH handling and add Spack RPATH."""
         # Add Spack's standard CMake args to the sub-builds.
         # They're called BY setup.py so we have to patch it.