diff --git a/src/Model/Friction/Friction.py b/src/Model/Friction/Friction.py
index a71a72f34c7b723e4f58c0c71eefec1de089d334..8eb575b01819ef92c11f6cad025134830fe94931 100644
--- a/src/Model/Friction/Friction.py
+++ b/src/Model/Friction/Friction.py
@@ -177,8 +177,7 @@ class Friction(SQLSubModel):
 
     def has_coefficient(self):
         return (
-            self._begin_strickler is not None and
-            self._end_strickler is not None
+            self._begin_strickler is not None
         )
 
     def is_full_defined(self):
@@ -237,7 +236,8 @@ class Friction(SQLSubModel):
 
     @property
     def end_strickler(self):
-        return self._end_strickler
+        # return self._end_strickler
+        return self._begin_strickler
 
     @end_strickler.setter
     def end_strickler(self, strickler):
@@ -247,13 +247,17 @@ class Friction(SQLSubModel):
     def get_friction(self, rk):
         if not self.contains_rk(rk):
             return None
-        minor = interp(rk,
-                       [self.begin_rk, self.end_rk],
-                       [self.begin_strickler.minor,
-                        self.end_strickler.minor])
-        medium = interp(rk,
-                        [self.begin_rk, self.end_rk],
-                        [self.begin_strickler.medium,
-                         self.end_strickler.medium])
+
+        minor = self.begin_strickler.minor
+        medium = self.begin_strickler.medium
+
+        # minor = interp(rk,
+        #                [self.begin_rk, self.end_rk],
+        #                [self.begin_strickler.minor,
+        #                 self.end_strickler.minor])
+        # medium = interp(rk,
+        #                 [self.begin_rk, self.end_rk],
+        #                 [self.begin_strickler.medium,
+        #                  self.end_strickler.medium])
 
         return minor, medium
diff --git a/src/Model/Geometry/Reach.py b/src/Model/Geometry/Reach.py
index 3ef25793e744592f4b8c4b00d9a0903e9ed6f254..265889677cef8ad652a55bd45e554773cc3f6a23 100644
--- a/src/Model/Geometry/Reach.py
+++ b/src/Model/Geometry/Reach.py
@@ -840,6 +840,9 @@ class Reach(SQLSubModel):
             z_last = profile.z_min()
             rk_last = profile.rk
 
+            if (rk_last - rk_first) == 0:
+                continue
+
             incline_acc += [
                 (z_last - z_first)
                 /