diff --git a/packages/devextreme/js/__internal/ui/drop_down_editor/m_drop_down_list.ts b/packages/devextreme/js/__internal/ui/drop_down_editor/m_drop_down_list.ts
index 29986d3fdb47..7ab9e4914d2e 100644
--- a/packages/devextreme/js/__internal/ui/drop_down_editor/m_drop_down_list.ts
+++ b/packages/devextreme/js/__internal/ui/drop_down_editor/m_drop_down_list.ts
@@ -383,7 +383,7 @@ class DropDownList<
     return selectedItem !== undefined
       ? Deferred().resolve(selectedItem).promise()
       // @ts-expect-error ts-error
-      : this._loadValue(value);
+      : this._loadValue(value, this.option('allowNullValue') ?? false);
   }
 
   _getPlainItems(items?) {
diff --git a/packages/devextreme/js/__internal/ui/editor/m_data_expression.ts b/packages/devextreme/js/__internal/ui/editor/m_data_expression.ts
index 369fb532d86d..bff735d2ee9d 100644
--- a/packages/devextreme/js/__internal/ui/editor/m_data_expression.ts
+++ b/packages/devextreme/js/__internal/ui/editor/m_data_expression.ts
@@ -66,11 +66,11 @@ const DataExpressionMixin = extend({}, DataHelperMixin, {
     return this.option('valueExpr') || 'this';
   },
 
-  _loadValue(value) {
+  _loadValue(value, allowNullValue = false) {
     const deferred = Deferred();
     value = this._unwrappedValue(value);
 
-    if (!isDefined(value)) {
+    if (!isDefined(value) || (value === null && !allowNullValue)) {
       return deferred.reject().promise();
     }