diff --git a/Appli-iso3dfd/test_nb_threads.py b/Appli-iso3dfd/test_nb_threads.py
index f2f1121e1cb18c9fcbd35e1874649bfef469055f..083638997e4d5ddc97a22dd9a9dc7e12c644dfad 100644
--- a/Appli-iso3dfd/test_nb_threads.py
+++ b/Appli-iso3dfd/test_nb_threads.py
@@ -1,6 +1,7 @@
 import subprocess
 import sys
 import os
+import re
 
 import launcher_SUBP
 import tools
@@ -18,8 +19,8 @@ for nb_threads in range(0,5):
             if "throughput" in line:
                 # Find float in line
                 throughput = float(re.findall("\d+\.\d+", line)[0])
-                troughputs[nb_threads] += troughput
-    troughputs[nb_threads] = troughputs[nb_threads]/6
+                throughputs[nb_threads] += throughput
+    throughputs[nb_threads] = throughputs[nb_threads]/6
 
 print('Mean value of throughput in the configuration [512, 256, 512, 128, 20, 9]')
 print('for a number of threads going from 4 to 8 :')