diff --git a/js/snapUtils.js b/js/snapUtils.js
index 376a6b68..764d3697 100644
--- a/js/snapUtils.js
+++ b/js/snapUtils.js
@@ -10,8 +10,14 @@ export const right = (box) => box.x + box.width;
 export const near = (a, b) => Math.abs(a - b) < SNAP_DISTANCE;
 
 // http://stackoverflow.com/a/3269471/1263117
-export const overlapX = (a, b) => left(a) <= right(b) + SNAP_DISTANCE && left(b) <= right(a) + SNAP_DISTANCE;
-export const overlapY = (a, b) => top(a) <= bottom(b) + SNAP_DISTANCE && top(b) <= bottom(a) + SNAP_DISTANCE;
+export const overlapX = (a, b) => {
+  return left(a) <= right(b) + SNAP_DISTANCE &&
+         left(b) <= right(a) + SNAP_DISTANCE;
+};
+export const overlapY = (a, b) => {
+  return top(a) <= bottom(b) + SNAP_DISTANCE &&
+         top(b) <= bottom(a) + SNAP_DISTANCE;
+};
 
 export const snap = (boxA, boxB) => {
   let x, y;