diff --git a/navis/plotting/k3d/k3d_objects.py b/navis/plotting/k3d/k3d_objects.py
index 07461262..bd54eeea 100644
--- a/navis/plotting/k3d/k3d_objects.py
+++ b/navis/plotting/k3d/k3d_objects.py
@@ -17,6 +17,7 @@
 
 import numpy as np
 import pandas as pd
+import trimesh as tm
 
 from ..colors import vertex_colors, eval_color, color_to_int
 from ..plot_utils import segments_to_coords, fibonacci_sphere