diff --git a/main.js b/main.js
index f9146b6f..fc424222 100644
--- a/main.js
+++ b/main.js
@@ -760,8 +760,8 @@ function placePoints() {
   const spacing = (grid.spacing = rn(Math.sqrt((graphWidth * graphHeight) / cellsDesired), 2)); // spacing between points before jirrering
   grid.boundary = getBoundaryPoints(graphWidth, graphHeight, spacing);
   grid.points = getJitteredGrid(graphWidth, graphHeight, spacing); // jittered square grid
-  grid.cellsX = Math.floor((graphWidth + 0.5 * spacing) / spacing);
-  grid.cellsY = Math.floor((graphHeight + 0.5 * spacing) / spacing);
+  grid.cellsX = Math.floor((graphWidth + 0.5 * spacing - 1e-10) / spacing);
+  grid.cellsY = Math.floor((graphHeight + 0.5 * spacing - 1e-10) / spacing);
   TIME && console.timeEnd("placePoints");
 }
 
diff --git a/modules/ui/general.js b/modules/ui/general.js
index b7a6255d..91605161 100644
--- a/modules/ui/general.js
+++ b/modules/ui/general.js
@@ -405,7 +405,7 @@ document.querySelectorAll("[data-locked]").forEach(function (e) {
 
 // lock option
 function lock(id) {
-  const input = document.querySelector("[data-stored='" + id + "']");
+  const input = document.querySelector("[data-stored=\"" + id + "\"]");
   if (input) localStorage.setItem(id, input.value);
   const el = document.getElementById("lock_" + id);
   if (!el) return;