diff --git a/src/theme/mermaid/sort.scss b/src/theme/mermaid/sort.scss
index 15edcdee..171f6a53 100644
--- a/src/theme/mermaid/sort.scss
+++ b/src/theme/mermaid/sort.scss
@@ -1,4 +1,4 @@
-button.gridjs {
+span.gridjs {
   &-sort {
     float: right;
     height: 24px;
diff --git a/src/view/plugin/sort/sort.tsx b/src/view/plugin/sort/sort.tsx
index 0b54e144..4bef056d 100644
--- a/src/view/plugin/sort/sort.tsx
+++ b/src/view/plugin/sort/sort.tsx
@@ -142,7 +142,7 @@ export function Sort(
   };
 
   return (
-    <button
+    <span
       // because the corresponding <th> has tabIndex=0
       tabIndex={-1}
       aria-label={_(`sort.sort${direction === 1 ? 'Desc' : 'Asc'}`)}