diff --git a/pelican/generators.py b/pelican/generators.py
index d7476850..e0aaa130 100644
--- a/pelican/generators.py
+++ b/pelican/generators.py
@@ -47,6 +47,7 @@ class Generator(object):
         simple_loader = FileSystemLoader(os.path.join(theme_path,
                                          "themes", "simple", "templates"))
         self.env = Environment(
+            trim_blocks=True,
             loader=ChoiceLoader([
                 FileSystemLoader(self._templates_path),
                 simple_loader,  # implicit inheritance