diff --git a/spacy/pipeline.pyx b/spacy/pipeline.pyx
index f4a654591..7a41085e4 100644
--- a/spacy/pipeline.pyx
+++ b/spacy/pipeline.pyx
@@ -866,8 +866,8 @@ class TextCategorizer(Pipe):
     name = 'textcat'
 
     @classmethod
-    def Model(cls, nr_class=1, width=64, **cfg):
-        return build_text_classifier(nr_class, width, **cfg)
+    def Model(cls, **cfg):
+        return build_text_classifier(**cfg)
 
     def __init__(self, vocab, model=True, **cfg):
         self.vocab = vocab
@@ -948,8 +948,9 @@ class TextCategorizer(Pipe):
             token_vector_width = 64
         if self.model is True:
             self.cfg['pretrained_dims'] = self.vocab.vectors_length
-            self.model = self.Model(len(self.labels), token_vector_width,
-                                    **self.cfg)
+            self.cfg['nr_class'] = len(self.labels)
+            self.cfg['width'] = token_vector_width
+            self.model = self.Model(**self.cfg)
             link_vectors_to_models(self.vocab)
         if sgd is None:
             sgd = self.create_optimizer()