diff --git a/db/migrate/20121005142110_regenerate_err_fingerprints.rb b/db/migrate/20121005142110_regenerate_err_fingerprints.rb
index c4553c3..424a80b 100644
--- a/db/migrate/20121005142110_regenerate_err_fingerprints.rb
+++ b/db/migrate/20121005142110_regenerate_err_fingerprints.rb
@@ -1,15 +1,7 @@
 class RegenerateErrFingerprints < Mongoid::Migration
   def self.up
     Err.all.each do |err|
-      if err.notices.any?
-        fingerprint_source = {
-          :backtrace   => err.notices.first.backtrace_id,
-          :error_class => err.error_class,
-          :component   => err.component,
-          :action      => err.action,
-          :environment => err.environment,
-          :api_key     => err.app.api_key
-        }
+      if err.notices.any? && err.problem
         err.update_attribute(
           :fingerprint,
           Fingerprint.generate(err.notices.first, err.app.api_key)
--
libgit2 0.21.2