diff --git a/src/layouts/ReferenceLayout.astro b/src/layouts/ReferenceLayout.astro
index b3df8d82c7..eab6eba024 100644
--- a/src/layouts/ReferenceLayout.astro
+++ b/src/layouts/ReferenceLayout.astro
@@ -140,10 +140,20 @@ const jumpCategoryData = categoryData.length === 1
   ? [...categoryData, ...categoryData[0].subcats]
   : categoryData;
 
-const pageJumpToLinks: JumpToLink[] = jumpCategoryData.map((category) => ({
-  label: category.name as string,
-  url: `#${category.name}`,
-}));
+const pageJumpToLinks: JumpToLink[] = jumpCategoryData
+  .map((categoryItem) => ({
+    label: categoryItem.name as string,
+    url: `#${categoryItem.name}`,
+  }))
+   .filter((link, index) => {
+    if (link.label === undefined) {
+      return false; // Completely remove all undefined labels
+    }
+    if (categoryData.length === 1 && index === 1) {
+      return false; // Specifically remove the redundant subcat under main cat
+    }
+    return true;
+  });
 
 const pageJumpToState: JumpToState = {
   links: pageJumpToLinks,