diff --git a/ppca/_ppca.py b/ppca/_ppca.py
index 45e5f2b..0dcc251 100644
--- a/ppca/_ppca.py
+++ b/ppca/_ppca.py
@@ -108,6 +108,9 @@ def fit(self, data, d=None, tol=1e-4, min_obs=10, verbose=False):
         self.eig_vals = vals
         self._calc_var()
 
+        # to allow using this as a part of sklearn's pipeline
+        return self
+
     def transform(self, data=None):
 
         if self.C is None: