diff --git a/src/Formik.tsx b/src/Formik.tsx
index 32be0e1d1..fe2863c8b 100755
--- a/src/Formik.tsx
+++ b/src/Formik.tsx
@@ -348,11 +348,11 @@ export function useFormik<Values extends FormikValues = FormikValues>({
     }
   );
 
-  // React.useEffect(() => {
-  //   if (validateOnMount && isMounted.current === true) {
-  //     validateFormWithLowPriority(props.initialValues);
-  //   }
-  // }, [props.initialValues, validateFormWithLowPriority]);
+  React.useEffect(() => {
+    if (validateOnMount && isMounted.current === true) {
+      validateFormWithLowPriority(props.initialValues);
+    }
+  }, [props.initialValues, validateOnMount, validateFormWithLowPriority]);
 
   const resetForm = React.useCallback(
     (nextState?: Partial<FormikState<Values>>) => {