diff --git a/src/bin/wireframe/main.rs b/src/bin/wireframe/main.rs
index ab4d3f4..4be379a 100644
--- a/src/bin/wireframe/main.rs
+++ b/src/bin/wireframe/main.rs
@@ -30,11 +30,11 @@ impl<S: Copy> DragCtl<S> {
 	pub fn on_button(&mut self, pos: Vec2, state: ElementState) {
 		match state {
 			ElementState::Pressed => {
-				assert!(self.ctl.is_none());
-				self.ctl = Some((pos, self.state));
+				if self.ctl.is_none() {
+					self.ctl = Some((pos, self.state));
+				}
 			}
 			ElementState::Released => {
-				assert!(self.ctl.is_some());
 				self.ctl = None;
 			}
 		}