diff --git a/princesse.gd b/princesse.gd
index 19a96f9..826dfa9 100644
--- a/princesse.gd
+++ b/princesse.gd
@@ -7,6 +7,7 @@ extends CharacterBody2D
 var gravity: int = ProjectSettings.get("physics/2d/default_gravity")
 @onready var wall_detect_left := $wall_detect_left as RayCast2D
 @onready var wall_detect_right := $wall_detect_right as RayCast2D
+@onready var ground_far_detect := $ground_far_detect as RayCast2D
 @onready var animation := $AnimatedSprite2D as AnimatedSprite2D
 @onready var camera := $Camera2D as Camera2D
 
@@ -43,6 +44,7 @@ var init_direction_change = true
 
 # variables d'état relatives au saut
 var jumping : bool = false
+var need_jump : bool = false
 var jumping_step : int = -1
 var jump_key_counter : int = 0
 
@@ -170,11 +172,15 @@ func _physics_process(delta: float) -> void:
     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:
-                jumping = true
-                jumping_step = JUMP_SPEED_TABLE.size()-1
-                jump_key_counter = 0
+        if ground_far_detect.is_colliding() or is_on_floor():
+            need_jump=true
+
+    if need_jump and is_on_floor():
+        need_jump = false
+        if not jumping:
+            jumping = true
+            jumping_step = JUMP_SPEED_TABLE.size()-1
+            jump_key_counter = 0
 
     if Input.is_action_pressed("jump" + action_suffix):
         if jumping:
diff --git a/princesse.tscn b/princesse.tscn
index 7cce985..746270d 100644
--- a/princesse.tscn
+++ b/princesse.tscn
@@ -215,6 +215,10 @@ animation = &"idle"
 target_position = Vector2(-10, 0)
 collision_mask = 16
 
+[node name="wall_detect_right" type="RayCast2D" parent="."]
+target_position = Vector2(14, 0)
+collision_mask = 16
+
 [node name="Camera2D" type="Camera2D" parent="."]
 zoom = Vector2(2, 2)
 
@@ -222,6 +226,6 @@ zoom = Vector2(2, 2)
 position = Vector2(2, 0)
 shape = SubResource("CapsuleShape2D_6r7th")
 
-[node name="wall_detect_right" type="RayCast2D" parent="."]
-target_position = Vector2(14, 0)
+[node name="ground_far_detect" type="RayCast2D" parent="."]
+target_position = Vector2(0, 38)
 collision_mask = 16