diff --git a/scripts/addons/cam/simple.py b/scripts/addons/cam/simple.py
index b233dbb9..1aa29ce5 100644
--- a/scripts/addons/cam/simple.py
+++ b/scripts/addons/cam/simple.py
@@ -19,6 +19,9 @@
 #
 # ***** END GPL LICENCE BLOCK *****
 
+# Solves: No module named 'shapely' (even if it is installed)
+help('modules')
+
 import math
 import sys
 import os