diff --git a/04oct/ex3.py b/04oct/ex3.py
index 54bf7f5..35dbb43 100644
--- a/04oct/ex3.py
+++ b/04oct/ex3.py
@@ -16,15 +16,14 @@ def koch(t: umonsTurtle, x: int, seuil: int):
     """
     if x < seuil:
         moveForward(t, x)
-        return
-
-    koch(t, x/3, seuil)
-    turnLeft(t, 60)
-    koch(t, x/3, seuil)
-    turnRight(t, 120)
-    koch(t, x/3, seuil)
-    turnLeft(t, 60)
-    koch(t, x/3, seuil)
+    else:
+        koch(t, x/3, seuil)
+        turnLeft(t, 60)
+        koch(t, x/3, seuil)
+        turnRight(t, 120)
+        koch(t, x/3, seuil)
+        turnLeft(t, 60)
+        koch(t, x/3, seuil)
 
 
 if __name__ == "__main__":
@@ -33,5 +32,5 @@ if __name__ == "__main__":
     dropPen(turtle)
     moveBackward(turtle, 250)
     usePen(turtle)
-    koch(turtle, 500, 1)
+    koch(turtle, 500, 20)
     wait()
diff --git a/04oct/ex4.py b/04oct/ex4.py
index ac766de..6c6418d 100644
--- a/04oct/ex4.py
+++ b/04oct/ex4.py
@@ -23,5 +23,5 @@ def flocon_rec(t, x, seuil, sides, i):
 if __name__ == "__main__":
     turtle = umonsTurtle()
     turtle.speed(0)
-    flocon(turtle, 100, 5, sides=5)
+    flocon(turtle, 100, 6, sides=4)
     wait()
diff --git a/04oct/ex5.py b/04oct/ex5.py
index a1c9d91..99fbf5b 100644
--- a/04oct/ex5.py
+++ b/04oct/ex5.py
@@ -24,5 +24,5 @@ def carre(t: umonsTurtle, x: int, seuil: int):
 if __name__ == "__main__":
     turtle = umonsTurtle()
     turtle.speed(0)
-    carre(turtle, 200, 1)
+    carre(turtle, 200, 5)
     wait()