diff --git a/app/client/components/GristDoc.ts b/app/client/components/GristDoc.ts
index 9eff9dbc..a3416052 100644
--- a/app/client/components/GristDoc.ts
+++ b/app/client/components/GristDoc.ts
@@ -701,7 +701,7 @@ export class GristDoc extends DisposableWithEvents {
 
                 const {recordCard, rowId} = popupOptions.hash;
                 if (recordCard) {
-                  if (!rowId || rowId === 'new') {
+                  if (!rowId) {
                     // Should be unreachable, but just to be sure (and to satisfy type checking)...
                     throw new Error('Unable to open Record Card: undefined row id');
                   }
diff --git a/app/client/components/RecordCardPopup.ts b/app/client/components/RecordCardPopup.ts
index 7fc1efac..de30ed10 100644
--- a/app/client/components/RecordCardPopup.ts
+++ b/app/client/components/RecordCardPopup.ts
@@ -7,13 +7,14 @@ import {ViewSectionRec} from 'app/client/models/DocModel';
 import {ChangeType, RowList} from 'app/client/models/rowset';
 import {theme} from 'app/client/ui2018/cssVars';
 import {DisposableWithEvents} from 'app/common/DisposableWithEvents';
+import {UIRowId} from 'app/plugin/GristAPI';
 import {dom, makeTestId, styled} from 'grainjs';
 
 const testId = makeTestId('test-record-card-popup-');
 
 interface RecordCardPopupOptions {
   gristDoc: GristDoc;
-  rowId: number;
+  rowId: UIRowId;
   viewSection: ViewSectionRec;
   onClose(): void;
 }