diff --git a/frontend/src/scripts/index.js b/frontend/src/scripts/index.js
index 981e8e1..17a70f2 100644
--- a/frontend/src/scripts/index.js
+++ b/frontend/src/scripts/index.js
@@ -97,7 +97,7 @@ class Main extends Component {
                 showPlayButton={false}
                 startIndex={this.state.currentImage}
                 showThumbnails={false}
-                renderCustomControls={this.renderCloseButton}
+                renderCustomControls={this.renderCloseButton.bind(this)}
             />
         </Modal>
         }