diff --git a/parso/python/normalizer.py b/parso/python/normalizer.py
index 8e4b544..9857d9b 100644
--- a/parso/python/normalizer.py
+++ b/parso/python/normalizer.py
@@ -14,7 +14,7 @@ class PEP8Normalizer(Normalizer):
     Normalizing to PEP8. Not really implemented, yet.
     """
     def normalize(self, leaf):
-        return leaf.prefix + leaf.value
+        return leaf.value
 
     def iter_errors(self, leaf):
         return iter([])
diff --git a/parso/tree.py b/parso/tree.py
index a3a8b0e..295f759 100644
--- a/parso/tree.py
+++ b/parso/tree.py
@@ -167,7 +167,7 @@ class NodeOrLeaf(object):
         try:
             children = self.children
         except AttributeError:
-            return normalizer(self)
+            return normalizer.normalize(self)
         else:
            return ''.join(child.normalize(normalizer) for child in children)