diff --git a/parso/python/normalizer.py b/parso/python/normalizer.py
index 34e5f4c..755a252 100644
--- a/parso/python/normalizer.py
+++ b/parso/python/normalizer.py
@@ -246,6 +246,8 @@ class PEP8Normalizer(Normalizer):
         if typ == 'suite':
             assert self._indentation_tos.type == IndentationTypes.SUITE
             self._indentation_tos = self._indentation_tos.parent
+            # If we dedent, no lines are needed anymore.
+            self._wanted_newline_count = None
         elif implicit_indentation_possible:
             self._implicit_indentation_possible = False
             if self._indentation_tos.type == IndentationTypes.IMPLICIT: