diff --git a/Examples/Tests/particle_thermal_boundary/analysis_2d.py b/Examples/Tests/particle_thermal_boundary/analysis_2d.py
index 344947dc148..e2fc225cddd 100755
--- a/Examples/Tests/particle_thermal_boundary/analysis_2d.py
+++ b/Examples/Tests/particle_thermal_boundary/analysis_2d.py
@@ -15,7 +15,6 @@
 """
 
 
-import os
 import sys
 
 import numpy as np