diff --git a/static/src/stylesheets/module/crosswords/_layout.scss b/static/src/stylesheets/module/crosswords/_layout.scss
index 7291a1b6ee54..975937bc0694 100644
--- a/static/src/stylesheets/module/crosswords/_layout.scss
+++ b/static/src/stylesheets/module/crosswords/_layout.scss
@@ -1,7 +1,8 @@
 @use "sass:math";
 
 @function xword-grid-dimensions($cells) {
-    @return $cells * ($xword-cell-width + $xword-border-width) + $xword-border-width;
+    $cell-width: if($cells <= 17, $xword-cell-width, $xword-cell-width-small);
+    @return $cells * ($cell-width + $xword-border-width) + $xword-border-width;
 }
 
 @each $cells in $xword-cell-sizes {