diff --git a/django/db/models/sql/compiler.py b/django/db/models/sql/compiler.py
index 8a24c62fe5..eaf2cd2569 100644
--- a/django/db/models/sql/compiler.py
+++ b/django/db/models/sql/compiler.py
@@ -546,8 +546,8 @@ class SQLCompiler(object):
                     lhs_col = int_opts.parents[int_model].column
                     dedupe = lhs_col in opts.duplicate_targets
                     if dedupe:
-                        avoid.update(self.query.dupe_avoidance.get(id(opts), lhs_col),
-                                ())
+                        avoid.update(self.query.dupe_avoidance.get((id(opts), lhs_col),
+                                ()))
                         dupe_set.add((opts, lhs_col))
                     int_opts = int_model._meta
                     alias = self.query.join((alias, int_opts.db_table, lhs_col,
@@ -620,8 +620,8 @@ class SQLCompiler(object):
                         lhs_col = int_opts.parents[int_model].column
                         dedupe = lhs_col in opts.duplicate_targets
                         if dedupe:
-                            avoid.update(self.query.dupe_avoidance.get(id(opts), lhs_col),
-                                ())
+                            avoid.update((self.query.dupe_avoidance.get(id(opts), lhs_col),
+                                ()))
                             dupe_set.add((opts, lhs_col))
                         int_opts = int_model._meta
                         alias = self.query.join(
diff --git a/tests/regressiontests/model_inheritance_regress/models.py b/tests/regressiontests/model_inheritance_regress/models.py
index c669b2337a..41895182f9 100644
--- a/tests/regressiontests/model_inheritance_regress/models.py
+++ b/tests/regressiontests/model_inheritance_regress/models.py
@@ -56,6 +56,9 @@ class ParkingLot3(Place):
 class Supplier(models.Model):
     restaurant = models.ForeignKey(Restaurant)
 
+class Wholesaler(Supplier):
+    retailer = models.ForeignKey(Supplier,related_name='wholesale_supplier')
+
 class Parent(models.Model):
     created = models.DateTimeField(default=datetime.datetime.now)
 
@@ -268,6 +271,10 @@ True
 >>> Supplier.objects.filter(restaurant=Restaurant(name='xx', address='yy'))
 []
 
+# Regression test for #11764.
+>>> for w in Wholesaler.objects.all().select_related():
+...     print w
+
 # Regression test for #7853
 # If the parent class has a self-referential link, make sure that any updates
 # to that link via the child update the right table.