diff --git a/src/mdevaluate/extra/chill.py b/src/mdevaluate/extra/chill.py
index 11ec8b2..8e30c97 100644
--- a/src/mdevaluate/extra/chill.py
+++ b/src/mdevaluate/extra/chill.py
@@ -161,8 +161,8 @@ def ice_types(trajectory: Coordinates, segments: int = 10000) -> pd.DataFrame:
 def ice_clusters_traj(
     traj: Coordinates, segments: int = 10000, skip: float = 0.1
 ) -> list:
-    def ice_clusters(frame: CoordinateFrame, traj: Coordinates) -> Tuple[float, list]:
-        selection = selector_ice(frame, traj, [0, 1, 2])
+    def ice_clusters(frame: CoordinateFrame) -> Tuple[float, list]:
+        selection = selector_ice(frame, [0, 1, 2])
         if len(selection) == 0:
             return frame.time, []
         else:
@@ -194,6 +194,6 @@ def ice_clusters_traj(
         np.int_(np.linspace(len(traj) * skip, len(traj) - 1, num=segments))
     )
     all_clusters = [
-        ice_clusters(traj[frame_index], traj) for frame_index in frame_indices
+        ice_clusters(traj[frame_index]) for frame_index in frame_indices
     ]
     return all_clusters