diff --git a/decode-spam-headers.py b/decode-spam-headers.py
index 2af7955..2c2b51f 100644
--- a/decode-spam-headers.py
+++ b/decode-spam-headers.py
@@ -1813,7 +1813,7 @@ class SMTPHeadersAnalysis:
 
     @staticmethod
     def gethostbyname(name, important = True):
-    	name = name.lower()
+        name = name.lower()
         if not important or options['dont_resolve'] or len(name) == 0:
             return ''