diff --git a/django/contrib/gis/db/backends/postgis/introspection.py b/django/contrib/gis/db/backends/postgis/introspection.py
index ad8d1db9999..af46ad56fc7 100644
--- a/django/contrib/gis/db/backends/postgis/introspection.py
+++ b/django/contrib/gis/db/backends/postgis/introspection.py
@@ -30,7 +30,7 @@ class PostGISIntrospection(DatabaseIntrospection):
             # The value for the geography type is actually a tuple
             # to pass in the `geography=True` keyword to the field
             # definition.
-            field_types.append(('geography', ('GeometryField', {'geography' : True})))
+            field_types.append(('geography', ('GeometryField', {'geography': True})))
         postgis_types = {}
 
         # The OID integers associated with the geometry type may