diff --git a/testcases/t/005-floating.t b/testcases/t/005-floating.t
index d62a0366..ac6623f2 100644
--- a/testcases/t/005-floating.t
+++ b/testcases/t/005-floating.t
@@ -76,8 +76,8 @@ $window->map;
 wait_for_map $window;
 
 cmd 'floating enable';
+sync_with_i3($x);
 
-# XXX potentionally racy
 ($absolute, $top) = $window->rect;
 
 cmp_ok($absolute->{width}, '==', 80, "i3 let the width at 80");