diff --git a/react/src/lib/Tooltip/index.js b/react/src/lib/Tooltip/index.js
index 38d9e7e0c1..be0b6fa931 100644
--- a/react/src/lib/Tooltip/index.js
+++ b/react/src/lib/Tooltip/index.js
@@ -60,7 +60,7 @@ Tooltip.propTypes = {
    /** @prop Optional object for Popover Component props | {} */
   popoverProps: PropTypes.object,
   /** @prop Tooltip text | ''  */
-  tooltip: PropTypes.oneOf([PropTypes.object, PropTypes.string]),
+  tooltip: PropTypes.oneOfType([PropTypes.object, PropTypes.string]),
   /** @prop Set the action which triggers the Tooltip | 'MouseEnter' */
   tooltipTrigger: PropTypes.oneOf(['MouseEnter', 'Click', 'Focus']),
   /** @prop Set the Tooltip width | null */