diff --git a/lib/sf/opportunity.rb b/lib/sf/opportunity.rb
index 30e8901..5221063 100644
--- a/lib/sf/opportunity.rb
+++ b/lib/sf/opportunity.rb
@@ -35,7 +35,7 @@ def self.inc_participations(since_date=nil)
   def self.cert_subscribers(since_date=nil)
     since_date ||=Date.today
     since = since_date.to_date.to_s
-    sobjects = Sf.client.query("select #{FIELDS_SELECT_STR} from Opportunity where Name like '%Certificate Service%' and Type not like '%Existing Business%' and IsWon = true and CloseDate >= #{since}")
+    sobjects = Sf.client.query("select #{FIELDS_SELECT_STR} from Opportunity where Name like '%Certificate Service%' and not Type like '%Existing Business%' and IsWon = true and CloseDate >= #{since}")
     build_collection sobjects unless sobjects.blank?
   end