diff --git a/hal-classifier/v1/en/dist_kn3_HAL_en_v1.py b/hal-classifier/v1/en/dist_kn3_HAL_en_v1.py
index bf3d4d1..72d503d 100755
--- a/hal-classifier/v1/en/dist_kn3_HAL_en_v1.py
+++ b/hal-classifier/v1/en/dist_kn3_HAL_en_v1.py
@@ -35,7 +35,7 @@
 
 verb_class={"spi":"Sciences de l'ingénieur [physics]","shs":"Sciences de l'Homme et Société","sdv":"Sciences du Vivant [q-bio]","sdu":"Planète et Univers [physics]","sde":"Sciences de l'environnement","scco":"Sciences cognitives","phys":"Physique [physics]","nlin":"Science non linéaire [physics]","math":"Mathématiques [math]","info":"Informatique [cs]","chim":"Chimie","stat":"Statistiques","qfin":"Économie et finance quantitative [q-fin]"}
 
-kdtree=KDTree(D)
+#kdtree=KDTree(D)
 
 
 distlist=[]