diff --git a/doc.html b/doc.html
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@@ -129,7 +129,7 @@
 
           <p>Since version 5.17 GPXSee supports HiDPI map tiles. To specify that a map
           uses HiDPI tiles use the <i>tilePixelRatio</i> tag. For the most common 512x512px
-          tiles (that shall be rendered as 256x256px) tiles, set the value to 2.</p>
+          tiles (that shall be rendered as 256x256px tiles), set the value to 2.</p>
 
           <h4 id="WMTS">WMTS</h4>
           <p>WMTS maps are distinguished by setting the <i>type</i> attribute of the