diff --git a/pystencils/cpu/kernelcreation.py b/pystencils/cpu/kernelcreation.py
index 9864b6f2d433feb5f6ccc08d24d774ee7b27af96..1aa102e4fd7fdecabc22e47605ccb6647aead9ef 100644
--- a/pystencils/cpu/kernelcreation.py
+++ b/pystencils/cpu/kernelcreation.py
@@ -130,7 +130,9 @@ def create_indexed_kernel(assignments: Union[AssignmentCollection, NodeCollectio
     assert len(spatial_coordinates) == 1, f"Non-index fields do not have the same number of spatial coordinates " \
                                           f"Non index fields are {non_index_fields}, spatial coordinates are " \
                                           f"{spatial_coordinates} and len(spatial coordiantes) is " \
-                                          f"{len(spatial_coordinates)}"
+                                          f"{len(spatial_coordinates)}, " \
+                                          f"index_fields in config: {config.index_fields}, " \
+                                          f"extracted index fields: {index_fields} "
     spatial_coordinates = list(spatial_coordinates)[0]
 
     def get_coordinate_symbol_assignment(name):