diff --git a/src/components/Button/BlankButton.tsx b/src/components/Button/BlankButton.tsx
index f4c5e31..25c0000 100644
--- a/src/components/Button/BlankButton.tsx
+++ b/src/components/Button/BlankButton.tsx
@@ -1,10 +1,10 @@
-import type { ComponentChildren } from 'preact';
+import type { JSX, ComponentChildren } from 'preact';
 
 import s from './styles.css';
 import { classNames } from '../../util/component';
 
 interface Props {
-  onClick?: EventListener;
+  onClick?: JSX.MouseEventHandler<HTMLButtonElement>;
   children?: ComponentChildren;
   className?: string;
   [key: string]: unknown;
diff --git a/src/components/Jobs/PeriodButton.tsx b/src/components/Jobs/PeriodButton.tsx
index a0bcfbb..dd509c8 100644
--- a/src/components/Jobs/PeriodButton.tsx
+++ b/src/components/Jobs/PeriodButton.tsx
@@ -9,7 +9,7 @@ interface Props {
   period: PERIOD;
 }
 
-const handlerClick: JSX.KeyboardEventHandler<HTMLLabelElement> = (event): void => {
+const handlerClick: JSX.KeyboardEventHandler<HTMLLabelElement> = (event) => {
   if (event.key === 'Enter' || event.key === ' ') {
     const el = event.currentTarget;
 
diff --git a/src/components/Tooltip/CronExamplesTooltip/index.tsx b/src/components/Tooltip/CronExamplesTooltip/index.tsx
index c12725f..c0690ae 100644
--- a/src/components/Tooltip/CronExamplesTooltip/index.tsx
+++ b/src/components/Tooltip/CronExamplesTooltip/index.tsx
@@ -1,3 +1,5 @@
+import type { JSX } from 'preact';
+
 import s from './styles.css';
 import cronExamples from './cronExamples.json';
 import { useStoreon } from '../../../store';
@@ -12,18 +14,15 @@ interface Props {
 export const CronExamplesTooltip: FC<Props> = ({ target }) => {
   const { items, dispatch } = useStoreon('items');
 
-  const { id } = target.dataset;
+  const id = target.dataset.id || '';
   const { cronExpression } = items.find((i) => i.id === id) || {};
 
-  const onClick: EventListener = (event) => {
-    const el = event.target as HTMLButtonElement;
-
+  const onClick: JSX.MouseEventHandler<HTMLButtonElement> = (event) =>
     dispatch('items/update', {
-      id: id || '',
+      id,
       name: KEYS.cronExpression,
-      value: el.value,
+      value: event.currentTarget.value,
     });
-  };
 
   const list = cronExamples.map((i) => {
     const classList = classNames([