diff --git a/rest_framework/fields.py b/rest_framework/fields.py
index 965e22c4d..661d02dee 100644
--- a/rest_framework/fields.py
+++ b/rest_framework/fields.py
@@ -344,7 +344,7 @@ class ManyRelatedField(ManyRelatedMixin, RelatedField):
     """
     Base class for related model managers.
 
-    If not overridden, this represents a to-many relatinship, using the unicode
+    If not overridden, this represents a to-many relationship, using the unicode
     representations of the target, and is read-only.
     """
     pass
diff --git a/rest_framework/runtests/runcoverage.py b/rest_framework/runtests/runcoverage.py
index ea2e3d458..0ce379ebe 100755
--- a/rest_framework/runtests/runcoverage.py
+++ b/rest_framework/runtests/runcoverage.py
@@ -32,10 +32,10 @@ def main():
             'Function-based test runners are deprecated. Test runners should be classes with a run_tests() method.',
             DeprecationWarning
         )
-        failures = TestRunner(['rest_framework'])
+        failures = TestRunner(['tests'])
     else:
         test_runner = TestRunner()
-        failures = test_runner.run_tests(['rest_framework'])
+        failures = test_runner.run_tests(['tests'])
     cov.stop()
 
     # Discover the list of all modules that we should test coverage for
diff --git a/rest_framework/tests/pk_relations.py b/rest_framework/tests/pk_relations.py
index a09343448..9095dcd81 100644
--- a/rest_framework/tests/pk_relations.py
+++ b/rest_framework/tests/pk_relations.py
@@ -38,7 +38,7 @@ class ForeignKeySource(models.Model):
 
 
 class ForeignKeyTargetSerializer(serializers.ModelSerializer):
-    sources = serializers.ManyPrimaryKeyRelatedField(queryset=ForeignKeySource.objects.all())
+    sources = serializers.ManyPrimaryKeyRelatedField(read_only=True)
 
     class Meta:
         model = ForeignKeyTarget