diff --git a/lib/core/settings/host-settings.component.ts b/lib/core/settings/host-settings.component.ts
index fa9d3bc81d..ffcbe2b629 100644
--- a/lib/core/settings/host-settings.component.ts
+++ b/lib/core/settings/host-settings.component.ts
@@ -198,6 +198,10 @@ export class HostSettingsComponent implements OnInit {
     }
 
     private saveOAuthValues(values: any) {
+        if (values.oauthConfig.publicUrls && (typeof values.oauthConfig.publicUrls === 'string')) {
+            values.oauthConfig.publicUrls = values.oauthConfig.publicUrls.split(',');
+        }
+
         this.storageService.setItem(AppConfigValues.OAUTHCONFIG, JSON.stringify(values.oauthConfig));
         this.storageService.setItem(AppConfigValues.IDENTITY_HOST, values.identityHost);
     }