diff --git a/app/models/claim.rb b/app/models/claim.rb
index 9a31f58c..1db71828 100644
--- a/app/models/claim.rb
+++ b/app/models/claim.rb
@@ -185,13 +185,13 @@ def to_param  # overridden, use uuid instead of id
   def process_data(options={})
     logger = Logger.new(STDOUT)
 
-    self.start!
+    self.start
 
     ### depdency Injection for testing
     result = options[:collect_data] || collect_data 
 
     if result.body["skip"]
-      claimed_at.present? ? self.finish! : self.skip!
+      claimed_at.present? ? self.finish : self.skip
 
       logger.warn "[Skipped] #{self.uid} – #{self.doi}] #{result.body["reason"]}"
     elsif result.body["errors"]
@@ -209,7 +209,7 @@ def process_data(options={})
 
       logger.warn "[Notification] #{self.uid} – #{self.doi}] with Put Code #{result.body["put_code"]}" 
 
-      self.notify!
+      self.notify
     else
       if to_be_created?
         write_attribute(:claimed_at, Time.zone.now)