diff --git a/HySoP/hysop/operator/stretching.py b/HySoP/hysop/operator/stretching.py
index da9abba848356dd5d2d7e8091929029021e39ff6..802533422b1037eaf2443c711026c7e2e799d733 100755
--- a/HySoP/hysop/operator/stretching.py
+++ b/HySoP/hysop/operator/stretching.py
@@ -111,6 +111,7 @@ class Stretching(Computational):
             res['rwork'].append(shape_v)
         return res
 
+    @debug
     def discretize(self):
         if self.method[SpaceDiscretisation] is FD_C_4:
             nbghosts = 2
@@ -173,7 +174,8 @@ class StretchingLinearized(Stretching):
 
         self.input.append(self.velocity_BF)
         self.input.append(self.vorticity_BF)
-    
+   
+    @debug
     def discretize(self):
         if self.method[SpaceDiscretisation] is FD_C_4:
             nbghosts = 2