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-rw-r--r--activerecord/lib/active_record/association_preload.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/association_preload.rb b/activerecord/lib/active_record/association_preload.rb
index 87b087bfea..9ef8ed15e8 100644
--- a/activerecord/lib/active_record/association_preload.rb
+++ b/activerecord/lib/active_record/association_preload.rb
@@ -21,7 +21,7 @@ module ActiveRecord
preload_associations(records, parent, preload_options)
reflection = reflections[parent]
parents = records.map {|record| record.send(reflection.name)}.flatten
- unless parents.empty?
+ unless parents.empty? || parents.first.nil?
parents.first.class.preload_associations(parents, child)
end
end