diff --git a/ts/smartstatus.classes.http.ts b/ts/smartstatus.classes.http.ts
index 6264f29..bf8eeef 100644
--- a/ts/smartstatus.classes.http.ts
+++ b/ts/smartstatus.classes.http.ts
@@ -6,7 +6,13 @@ export class HttpStatus {
     HttpStatus.statusMap[statusStringArg] = statusArg;
   }
   public static getHttpStatusByString(codeStringArg: string): HttpStatus {
-    const statusInstance = new HttpStatus.statusMap[codeStringArg]();
+    let statusInstance: HttpStatus;
+    try {
+      statusInstance = new HttpStatus.statusMap[codeStringArg]();
+    } catch {
+      console.log('unknown status')
+      return null;
+    }
     return statusInstance;
   }
   public code: number;