diff --git a/src/client/scripts/physics.ts b/src/client/scripts/physics.ts
index 8e971d584..445b6296e 100644
--- a/src/client/scripts/physics.ts
+++ b/src/client/scripts/physics.ts
@@ -79,7 +79,7 @@ export function physics(container: HTMLElement) {
 				objEl.offsetWidth,
 				objEl.offsetHeight,
 				{
-					chamfer: { radius: parseInt(style.borderRadius, 10) },
+					chamfer: { radius: parseInt(style.borderRadius || '0', 10) },
 					restitution: 0.5
 				}
 			);