diff --git a/princesse.gd b/princesse.gd
index 7652269..c19ddd5 100644
--- a/princesse.gd
+++ b/princesse.gd
@@ -50,6 +50,7 @@ var jump_key_counter : int = 0
 var falling_step : int = -1
 
 var pressing_wall = false
+var grab_wall = false
 
 
 const PLATFORM_LAYER = 1 << (5 - 1)    # collision layer 5
@@ -108,9 +109,10 @@ func fall() -> int:
         falling_step = -1
         return velocity.y
     else:
-        falling_step = min(falling_step+1, FALL_SPEED_TABLE.size()-1)
-        if pressing_wall:
-            falling_step = min(falling_step, FALL_SPEED_TABLE.size()-5)
+        if grab_wall:
+            falling_step = max(falling_step-1, 1)
+        else:
+            falling_step = min(falling_step+1, FALL_SPEED_TABLE.size()-1)
     return FALL_SPEED_TABLE[falling_step] * FALLING_SPEED
 
 
@@ -137,6 +139,9 @@ func end_jump():
     jump_key_counter = 0
 
 func _physics_process(delta: float) -> void:
+    pressing_wall = is_on_wall_only()
+    grab_wall = pressing_wall and Input.is_action_pressed("grab" + action_suffix)
+
     if Input.is_action_just_pressed("jump" + action_suffix):
         if is_on_floor():
             if not jumping:
@@ -163,7 +168,6 @@ func _physics_process(delta: float) -> void:
             "move_right" + action_suffix
             )
 
-    pressing_wall = is_on_wall_only() and not is_zero_approx(axis)
 
     if not is_zero_approx(axis):
         if axis < 0:
@@ -180,10 +184,10 @@ func _physics_process(delta: float) -> void:
         else:
             animation.scale.x = -1.0
 
-        if pressing_wall and not jumping:
+        if grab_wall and not jumping:
             animation.scale.x *= -1
 
-    floor_stop_on_slope = not platform_detector.is_colliding()
+    #floor_stop_on_slope = not platform_detector.is_colliding()
     var collision = move_and_slide()
     if collision:
         var collider = get_last_slide_collision().get_collider()
@@ -211,7 +215,7 @@ func get_new_animation(is_shooting := false) -> String:
             animation_new = "idle"
     else:
         if velocity.y > 0.0:
-            if pressing_wall:
+            if grab_wall:
                 animation_new = "wall_stick"
             else:
                 if walking_step > 0:
diff --git a/project.godot b/project.godot
index a3884b2..3e41249 100644
--- a/project.godot
+++ b/project.godot
@@ -44,6 +44,13 @@ jump={
 , Object(InputEventJoypadButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"button_index":0,"pressure":0.0,"pressed":true,"script":null)
 ]
 }
+grab={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194326,"key_label":0,"unicode":0,"echo":false,"script":null)
+, Object(InputEventJoypadButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"button_index":9,"pressure":0.0,"pressed":true,"script":null)
+, Object(InputEventJoypadButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"button_index":10,"pressure":0.0,"pressed":true,"script":null)
+]
+}
 
 [layer_names]