diff --git a/sphinx_design/tabs.py b/sphinx_design/tabs.py
index a114170..30a6ee6 100644
--- a/sphinx_design/tabs.py
+++ b/sphinx_design/tabs.py
@@ -101,6 +101,7 @@ def run(self) -> List[nodes.Node]:
         textnodes, _ = self.state.inline_text(self.arguments[0], self.lineno)
         tab_label = nodes.rubric(
             self.arguments[0],
+            "",
             *textnodes,
             classes=["sd-tab-label"] + self.options.get("class-label", []),
         )
@@ -260,6 +261,7 @@ def run(self) -> None:
 
                 # create: <label for="id">...</label>
                 label_node = sd_tab_label(
+                    "",
                     "",
                     *tab_label.children,
                     input_id=tab_item_identity,