diff --git a/src/index.tsx b/src/index.tsx
index 956da454..8e3905f4 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -305,7 +305,9 @@ export default class RNSketchCanvas extends React.Component<
           </View>
         </View>
         <SketchCanvas
-          ref={(ref) => (this._sketchCanvas = ref)}
+          ref={(ref) => {
+            this._sketchCanvas = ref;
+          }}
           style={this.props.canvasStyle}
           strokeColor={
             this.state.color +
diff --git a/src/types.tsx b/src/types.tsx
index de1e3dd0..4460e6a5 100644
--- a/src/types.tsx
+++ b/src/types.tsx
@@ -1,3 +1,4 @@
+import type { JSX } from 'react';
 import type { StyleProp, ViewStyle } from 'react-native';
 
 export type ImageType = 'png' | 'jpg';