diff --git a/static/js/directives/ui/dockerfile-path-select/dockerfile-path-select.component.ts b/static/js/directives/ui/dockerfile-path-select/dockerfile-path-select.component.ts
index fe63e66b3..82e17faf1 100644
--- a/static/js/directives/ui/dockerfile-path-select/dockerfile-path-select.component.ts
+++ b/static/js/directives/ui/dockerfile-path-select/dockerfile-path-select.component.ts
@@ -42,7 +42,7 @@ export class DockerfilePathSelectComponent implements OnChanges {
     this.isUnknownPath = false;
     var isValidPath: boolean = false;
 
-    if (path.length > 0 && path[0] === '/') {
+    if (path != null && path.length > 0 && path[0] === '/') {
       isValidPath = true;
       this.isUnknownPath = supportsFullListing && paths.indexOf(path) < 0;
     }