diff --git a/lib/redmine/scm/adapters/abstract_adapter.rb b/lib/redmine/scm/adapters/abstract_adapter.rb
index 2c254d48..8fbae9ff 100644
--- a/lib/redmine/scm/adapters/abstract_adapter.rb
+++ b/lib/redmine/scm/adapters/abstract_adapter.rb
@@ -279,7 +279,6 @@ module Redmine
             end
           else
             if line =~ /^[^\+\-\s@\\]/
-              self.delete(self.keys.sort.last)
               @parsing = false
               return false
             elsif line =~ /^@@ (\+|\-)(\d+)(,\d+)? (\+|\-)(\d+)(,\d+)? @@/