diff --git a/packages/docusaurus-theme-openapi-docs/src/theme/ApiExplorer/ParamOptions/index.tsx b/packages/docusaurus-theme-openapi-docs/src/theme/ApiExplorer/ParamOptions/index.tsx
index 5ee5378a9..cfed7cb42 100644
--- a/packages/docusaurus-theme-openapi-docs/src/theme/ApiExplorer/ParamOptions/index.tsx
+++ b/packages/docusaurus-theme-openapi-docs/src/theme/ApiExplorer/ParamOptions/index.tsx
@@ -80,6 +80,7 @@ function ParamOptions() {
       {optionalParams.length > 0 && (
         <>
           <button
+            type="button"
             className="openapi-explorer__show-more-btn"
             onClick={() => setShowOptional((prev) => !prev)}
           >