diff --git a/ast/ast.py b/ast/ast.py
index 99ce1d9..39c6471 100644
--- a/ast/ast.py
+++ b/ast/ast.py
@@ -56,10 +56,10 @@ def print_ast(lang_module, input_file):
   lang = sys.argv[1]
 
   try:
-      if sys.version_info >= (3,0):
-        lang = "%s_py3" % lang
+    if sys.version_info >= (3,0):
+      lang = "%s_py3" % lang
   except:
-      pass
+    pass
 
   filename = sys.argv[2]