diff --git a/modelskill/comparison/_collection_plotter.py b/modelskill/comparison/_collection_plotter.py
index bae36154..35c486d2 100644
--- a/modelskill/comparison/_collection_plotter.py
+++ b/modelskill/comparison/_collection_plotter.py
@@ -783,7 +783,6 @@ def spatial_overview(
             The matplotlib axes object
         """
         from ..plotting import spatial_overview
-        from ..obs import observation
 
         obs = [cmp._to_observation() for cmp in self.cc]
         # TODO how to add model domain(s)
@@ -815,7 +814,6 @@ def temporal_coverage(
             plot title, default empty
         """
         from ..plotting import temporal_coverage
-        from ..obs import observation
 
         obs = [cmp._to_observation() for cmp in self.cc]
         mod = self.cc[0]._to_model()