diff --git a/src/ui_ng/src/app/config/config.component.ts b/src/ui_ng/src/app/config/config.component.ts
index ef70f27fb..7c5705f8c 100644
--- a/src/ui_ng/src/app/config/config.component.ts
+++ b/src/ui_ng/src/app/config/config.component.ts
@@ -266,7 +266,7 @@ export class ConfigurationComponent implements OnInit, OnDestroy {
                         this.msgHandler.handleReadOnly();
                     }
 
-                    if (changes['read_only'].toString() === "false") {
+                    if (changes['read_only'] && changes['read_only'].toString() === "false") {
                         this.msgHandler.clear();
                     }