diff --git a/gwcs/api.py b/gwcs/api.py
index b23ee868..bcff2c1b 100644
--- a/gwcs/api.py
+++ b/gwcs/api.py
@@ -9,8 +9,6 @@
 from astropy.modeling import separable
 import astropy.units as u
 
-from . import coordinate_frames as cf
-
 __all__ = ["GWCSAPIMixin"]