diff --git a/python/raytracing/test.py b/python/raytracing/test.py
index 2a3a315c..8892fbe5 100644
--- a/python/raytracing/test.py
+++ b/python/raytracing/test.py
@@ -2,6 +2,7 @@
 import snappy
 
 from snappy import raytracing
+import snappy.raytracing.geodesic_tube_info
 
 modules = [
     raytracing.cohomology_fractal,