diff --git a/docs/api/structures/rectangle.md b/docs/api/structures/rectangle.md
index 0cd000699e..1a1228bc0b 100644
--- a/docs/api/structures/rectangle.md
+++ b/docs/api/structures/rectangle.md
@@ -1,6 +1,6 @@
 # Rectangle Object
 
-* `x` Number - The x coordinate of the origin of the rectangle
-* `y` Number - The y coordinate of the origin of the rectangle
-* `width` Number
-* `height` Number
+* `x` Number - The x coordinate of the origin of the rectangle (must be an integer)
+* `y` Number - The y coordinate of the origin of the rectangle (must be an integer)
+* `width` Number - The width of the rectangle (must be an integer)
+* `height` Number - The height of the rectangle (must be an integer)