diff --git a/src/app/components/project-map/project-map.component.ts b/src/app/components/project-map/project-map.component.ts
index 44128aaf..ca1b28f5 100644
--- a/src/app/components/project-map/project-map.component.ts
+++ b/src/app/components/project-map/project-map.component.ts
@@ -464,7 +464,7 @@ export class ProjectMapComponent implements OnInit, OnDestroy {
   }
 
   exportProject() {
-    if (this.nodes.filter(node => node.node_type = 'virtualbox').length > 0) {
+    if (this.nodes.filter(node => node.node_type === 'virtualbox').length > 0) {
       this.toasterService.error('Map with VirtualBox machines cannot be exported.')
     } else {
       window.location.href = `http://${this.server.host}:${this.server.port}/v2/projects/${this.project.project_id}/export`;