diff --git a/packages/xforms-engine/src/instance/RankControl.ts b/packages/xforms-engine/src/instance/RankControl.ts
index 759c7d8bd..48ae6ccc4 100644
--- a/packages/xforms-engine/src/instance/RankControl.ts
+++ b/packages/xforms-engine/src/instance/RankControl.ts
@@ -132,7 +132,7 @@ export class RankControl
 	}
 
 	setValues(valuesInOrder: readonly string[]): Root {
-		const sourceValues: string[] = this.mapOptionsByValue().keys();
+		const sourceValues: string[] = Array.from(this.mapOptionsByValue().keys());
 		const hasAllValues = !sourceValues.some((sourceValue) => valuesInOrder.includes(sourceValue));
 		if (hasAllValues) {
 			throw new RankFunctionalityError('There are missing options. Rank should have all options.', 'Rank Control');
diff --git a/packages/xforms-engine/src/lib/reactivity/createSelectItems.ts b/packages/xforms-engine/src/lib/reactivity/createSelectItems.ts
index a0573bb54..fa55ecf85 100644
--- a/packages/xforms-engine/src/lib/reactivity/createSelectItems.ts
+++ b/packages/xforms-engine/src/lib/reactivity/createSelectItems.ts
@@ -6,7 +6,7 @@ import type { EvaluationContext } from '../../instance/internal-api/EvaluationCo
 import type { SelectControl } from '../../instance/SelectControl.ts';
 import type { ItemDefinition } from '../../parse/body/control/ItemDefinition.ts';
 import { createTextRange } from './text/createTextRange.ts';
-import type { SourceValueItem, createItemset, derivedItemLabel } from './createBaseItemset.ts';
+import { type SourceValueItem, createItemset, derivedItemLabel } from './createBaseItemset.ts';
 
 const createSelectItemLabel = (
 	context: EvaluationContext,