diff --git a/types/wlr_box.c b/types/wlr_box.c
index 2ea743d0..c92b0aa4 100644
--- a/types/wlr_box.c
+++ b/types/wlr_box.c
@@ -61,8 +61,8 @@ bool wlr_box_contains_point(const struct wlr_box *box, double x, double y) {
 	if (wlr_box_empty(box)) {
 		return false;
 	} else {
-		return x >= box->x && x <= box->x + box->width &&
-			y >= box->y && y <= box->y + box->height;
+		return x >= box->x && x < box->x + box->width &&
+			y >= box->y && y < box->y + box->height;
 	}
 }