diff --git a/src/layout/mod.rs b/src/layout/mod.rs
index 42474e8c..730a98ac 100644
--- a/src/layout/mod.rs
+++ b/src/layout/mod.rs
@@ -2335,6 +2335,7 @@ impl<W: LayoutElement> Layout<W> {
                 }
                 InteractiveMoveState::Moving(move_) => {
                     assert_eq!(self.clock, move_.tile.clock);
+                    assert!(!move_.tile.window().is_pending_fullscreen());
 
                     let scale = move_.output.current_scale().fractional_scale();
                     let options = Options::clone(&self.options).adjusted_for_scale(scale);