diff --git a/index.html b/index.html
index 9f87ebaf..c997c028 100644
--- a/index.html
+++ b/index.html
@@ -8110,7 +8110,7 @@
     <script src="modules/ui/stylePresets.js?v=1.96.00"></script>
 
     <script src="modules/ui/general.js?v=1.98.01"></script>
-    <script src="modules/ui/options.js?v=1.97.14"></script>
+    <script src="modules/ui/options.js?v=1.98.02"></script>
     <script src="main.js?v=1.98.01"></script>
 
     <script defer src="modules/relief-icons.js"></script>
diff --git a/modules/ui/options.js b/modules/ui/options.js
index 8b9e12a7..331a7476 100644
--- a/modules/ui/options.js
+++ b/modules/ui/options.js
@@ -921,11 +921,16 @@ function updateTilesOptions() {
   const tileH = (graphHeight / tilesY) | 0;
 
   const alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+  function getRowLabel(row) {
+    const first = row >= alphabet.length ? alphabet[Math.floor(row / alphabet.length) - 1] : "";
+    const last = alphabet[row % alphabet.length];
+    return first + last;
+  }
+
   for (let y = 0, row = 0; y + tileH <= graphHeight; y += tileH, row++) {
     for (let x = 0, column = 1; x + tileW <= graphWidth; x += tileW, column++) {
       rects.push(`<rect x=${x} y=${y} width=${tileW} height=${tileH} />`);
-      const label = alphabet[row % alphabet.length] + column;
-      labels.push(`<text x=${x + tileW / 2} y=${y + tileH / 2}>${label}</text>`);
+      labels.push(`<text x=${x + tileW / 2} y=${y + tileH / 2}>${getRowLabel(row)}${column}</text>`);
     }
   }
 
diff --git a/versioning.js b/versioning.js
index 91176f92..0e5b2030 100644
--- a/versioning.js
+++ b/versioning.js
@@ -1,7 +1,7 @@
 "use strict";
 
 // version and caching control
-const version = "1.98.01"; // generator version, update each time
+const version = "1.98.02"; // generator version, update each time
 
 {
   document.title += " v" + version;