diff --git a/src/FillSpace.jsx b/src/FillSpace.jsx
index e81307b..d8f80f7 100644
--- a/src/FillSpace.jsx
+++ b/src/FillSpace.jsx
@@ -59,7 +59,7 @@ function renderProbeElement(renderItem) {
 
 const MIN_THUMB_HEIGHT = 48;
 const RACEWAY_WIDTH = 16;
-const RACEWAY_BOTTOM_MARGIN = 8;
+const RACEWAY_BOTTOM_MARGIN = 16;
 
 class FillSpace extends Component {
   constructor(props) {