diff --git a/src/Tooltip.tsx b/src/Tooltip.tsx
index 713aa3a95..25095b6ba 100644
--- a/src/Tooltip.tsx
+++ b/src/Tooltip.tsx
@@ -62,6 +62,7 @@ export const Tooltip = memo(
                         className={fr.cx("fr-btn--tooltip", "fr-btn")}
                         aria-describedby={id}
                         id={`tooltip-owner-${id}`}
+                        type="button"
                     >
                         {t("tooltip-button-text")}
                     </button>