diff --git a/django/core/serializers/json.py b/django/core/serializers/json.py
index ce7cdb3179..91af84e9ca 100644
--- a/django/core/serializers/json.py
+++ b/django/core/serializers/json.py
@@ -40,6 +40,8 @@ def Deserializer(stream_or_string, **options):
     try:
         for obj in PythonDeserializer(simplejson.load(stream), **options):
             yield obj
+    except GeneratorExit:
+        raise
     except Exception, e:
         # Map to deserializer error
         raise DeserializationError(e)
diff --git a/django/core/serializers/pyyaml.py b/django/core/serializers/pyyaml.py
index 1f4f967ebb..7a508da5d7 100644
--- a/django/core/serializers/pyyaml.py
+++ b/django/core/serializers/pyyaml.py
@@ -55,6 +55,8 @@ def Deserializer(stream_or_string, **options):
     try:
         for obj in PythonDeserializer(yaml.safe_load(stream), **options):
             yield obj
+    except GeneratorExit:
+        raise
     except Exception, e:
         # Map to deserializer error
         raise DeserializationError(e)
diff --git a/tests/regressiontests/serializers_regress/tests.py b/tests/regressiontests/serializers_regress/tests.py
index efad176eaa..5abff6345f 100644
--- a/tests/regressiontests/serializers_regress/tests.py
+++ b/tests/regressiontests/serializers_regress/tests.py
@@ -17,12 +17,18 @@ try:
 except ImportError:
     from StringIO import StringIO
 
+try:
+    import yaml
+except ImportError:
+    yaml = None
+
 from django.core import serializers
 from django.core.serializers import SerializerDoesNotExist
 from django.core.serializers.base import DeserializationError
 from django.db import connection, models
 from django.test import TestCase
 from django.utils.functional import curry
+from django.utils.unittest import skipUnless
 
 from .models import (BooleanData, CharData, DateData, DateTimeData, EmailData,
     FileData, FilePathData, DecimalData, FloatData, IntegerData, IPAddressData,
@@ -396,6 +402,7 @@ class SerializerTests(TestCase):
             for obj in serializers.deserialize("json", """[{"pk":1}"""):
                 pass
 
+    @skipUnless(yaml, "PyYAML not installed")
     def test_yaml_deserializer_exception(self):
         with self.assertRaises(DeserializationError):
             for obj in serializers.deserialize("yaml", "{"):