diff --git a/behaviours/move_towards_mouse.gd b/behaviours/move_towards_mouse.gd
index 72db730..3306d2b 100644
--- a/behaviours/move_towards_mouse.gd
+++ b/behaviours/move_towards_mouse.gd
@@ -6,7 +6,7 @@ signal move(movement: Vector2)
 signal captured
 
 
-@export_range(-500, 500, 1) var speed := 100.0
+@export_range(-500, 500, 1) var speed: float = 100.0
 
 @onready var viewport: Viewport = get_viewport()