diff --git a/nginx.py b/nginx.py
index 866aea3..19b4798 100755
--- a/nginx.py
+++ b/nginx.py
@@ -104,7 +104,8 @@ def as_strings(self):
             else:
                 for y in x.as_strings:
                     ret.append(y)
-        ret[-1] = re.sub('}\n+$', '}\n', ret[-1])
+        if ret:
+            ret[-1] = re.sub('}\n+$', '}\n', ret[-1])
         return ret