diff --git a/activerecord/lib/active_record/associations/association_scope.rb b/activerecord/lib/active_record/associations/association_scope.rb
index 48437a1c9e72aa35bfdc58014884aef727acbebe..15844de0bce103d0ce43ca5305596fbe22045ece 100644
--- a/activerecord/lib/active_record/associations/association_scope.rb
+++ b/activerecord/lib/active_record/associations/association_scope.rb
@@ -124,8 +124,7 @@ def add_constraints(scope, owner, association_klass, refl, chain_head, chain_tai
         scope = last_chain_scope(scope, table, owner_reflection, owner, association_klass)
 
         reflection = chain_head
-        loop do
-          break unless reflection
+        while reflection
           table = reflection.alias_name
 
           unless reflection == chain_tail