diff --git a/django/views/debug.py b/django/views/debug.py
index 5371af9f5c..4cf70cc3d7 100644
--- a/django/views/debug.py
+++ b/django/views/debug.py
@@ -9,6 +9,7 @@ from os.path import dirname, join as pathjoin
 HIDDEN_SETTINGS = re.compile('SECRET|PASSWORD')
 
 def linebreak_iter(template_source):
+    yield 0
     p = template_source.find('\n')
     while p >= 0:
         yield p