diff --git a/emails.py b/emails.py
index a0722f2..cca5a3e 100755
--- a/emails.py
+++ b/emails.py
@@ -136,8 +136,8 @@ except:
 ###############################################################################
 
 # Is this a request for subscription?
-request_subscribe   = email_subject.upper('SUBSCRIBE')   and len(email_body) == 0
-request_unsubscribe = email_subject.upper('UNSUBSCRIBE') and len(email_body) == 0
+request_subscribe   = email_subject.upper() == 'SUBSCRIBE'   and len(email_body) == 0
+request_unsubscribe = email_subject.upper() == 'UNSUBSCRIBE' and len(email_body) == 0
 
 if request_subscribe:
     # Already subscribed?