diff --git a/src/components/App/index.tsx b/src/components/App/index.tsx
index 67641f90..bd58ee94 100644
--- a/src/components/App/index.tsx
+++ b/src/components/App/index.tsx
@@ -75,7 +75,7 @@ export default class App extends Component<Props, State> {
 
   @bind
   private onFileDrop({ files }: FileDropEvent) {
-    if (!files && files.length > 0) return;
+    if (!files || files.length > 0) return;
     const file = files[0];
     this.openEditor();
     this.setState({ file });