diff --git a/ai4neb/Regressor/RegressionModel.py b/ai4neb/Regressor/RegressionModel.py
index c8c1366..84b52d4 100644
--- a/ai4neb/Regressor/RegressionModel.py
+++ b/ai4neb/Regressor/RegressionModel.py
@@ -597,10 +597,10 @@ def _set_scaler(self, force=False):
             else:
                 self.scaler = StandardScaler()
             self.scaler.fit(self.X_train)
-        # ToDO: PCA needs to be applied to scaled data. This is not the case.
+        
         if self.pca_N != 0:
             self.pca = PCA(n_components=self.pca_N)
-            self.pca.fit(self.X_train)
+            self.pca.fit(self.scaler.transform(self.X_train))
 
     def _set_scaler_y(self, force=False):
         if ((self.scaler_y is None) or force) and self.scaling_y and self.y_train is not None:
@@ -769,7 +769,7 @@ def plot_loss(self, ax=None, i_RM=0, **kwargs):
                     ax.plot(val_loss_values, label='Validation loss')
             ax.set_yscale('log')
     
-    def predict(self, scoring=False, reduce_by=None):
+    def predict(self, scoring=False, reduce_by=None, **kwargs):
         """
         Compute the prediction using self.X_test
         Results are stored into self.pred
@@ -786,7 +786,7 @@ def predict(self, scoring=False, reduce_by=None):
             if self.predict_functional:
                 self.pred = self.RMs[0](self.X_test)[0,::]                
             else:
-                self.pred = self.RMs[0].predict(self.X_test)
+                self.pred = self.RMs[0].predict(self.X_test, **kwargs)
         else:
             self.pred = []
             for i_RM, RM in enumerate(self.RMs):
@@ -797,7 +797,7 @@ def predict(self, scoring=False, reduce_by=None):
                 if self.predict_functional:
                     self.pred.append(RM(to_predict))[0,::]
                 else:
-                    self.pred.append(RM.predict(to_predict))
+                    self.pred.append(RM.predict(to_predict, **kwargs))
             self.pred = np.array(self.pred).T
         if scoring:
             if self.N_test != self.N_test_y:
diff --git a/ai4neb/version.py b/ai4neb/version.py
index 65893b1..627f421 100644
--- a/ai4neb/version.py
+++ b/ai4neb/version.py
@@ -1,4 +1,4 @@
 # -*- coding: utf-8 -*-
 # ai4neb version
 
-__version__="0.2.12"
+__version__="0.2.13"