diff --git a/examples/kinetics_fad_semiclassical_wavelength.py b/examples/kinetics_fad_semiclassical_wavelength.py
index 129a043..ff98cf1 100644
--- a/examples/kinetics_fad_semiclassical_wavelength.py
+++ b/examples/kinetics_fad_semiclassical_wavelength.py
@@ -1,5 +1,6 @@
 #! /usr/bin/env python
 
+import pdb
 from pathlib import Path
 
 import matplotlib.pyplot as plt