diff --git a/sncosmo/__init__.py b/sncosmo/__init__.py
index c4548af2..d8a37862 100644
--- a/sncosmo/__init__.py
+++ b/sncosmo/__init__.py
@@ -147,12 +147,12 @@ class Conf(ConfigNamespace):
 
     # Do all the necessary imports: everything except registry goes in the
     # top-level namespace.
+    from .dustmap import *
     from .spectral import *
     from .models import *
     from .io import *
     from .snanaio import *
     from .fitting import *
-    from .extmap import *
     from .simulation import *
     from . import registry
     from .builtins import *
diff --git a/sncosmo/extmap.py b/sncosmo/dustmap.py
similarity index 100%
rename from sncosmo/extmap.py
rename to sncosmo/dustmap.py
diff --git a/sncosmo/tests/test_extmap.py b/sncosmo/tests/test_dustmap.py
similarity index 100%
rename from sncosmo/tests/test_extmap.py
rename to sncosmo/tests/test_dustmap.py