diff --git a/src/pystencils_reco/projection.py b/src/pystencils_reco/projection.py
index ab5b13b61c7422a5b978ad92d7f5ede3a3dbf6f1..c7aadffac5808af05abe963c2a157490197804ac 100644
--- a/src/pystencils_reco/projection.py
+++ b/src/pystencils_reco/projection.py
@@ -8,8 +8,6 @@
 Implements a generic forward and backprojection projections
 """
 
-import types
-
 import sympy
 
 import pystencils
@@ -17,8 +15,6 @@ import pystencils.astnodes
 import pystencils.autodiff
 import pystencils.interpolation_astnodes
 import pystencils_reco._geometry
-from pystencils.autodiff import AdjointField
-from pystencils.cache import disk_cache_no_fallback
 from pystencils_reco import crazy