diff --git a/pipenv/project.py b/pipenv/project.py
index 3ca986c2..98ef6606 100644
--- a/pipenv/project.py
+++ b/pipenv/project.py
@@ -123,8 +123,10 @@ class Project(object):
     def write_toml(self, data, path=None):
         if path is None:
             path = self.pipfile_location
+
+        formatted_data = format_toml(toml.dumps(data))
         with open(path, 'w') as f:
-            f.write(format_toml(toml.dumps(data)))
+            f.write(formatted_data)
 
     @property
     def sources(self):