diff --git a/ets2panda/parser/ETSparser.cpp b/ets2panda/parser/ETSparser.cpp
index 5541ac57d5cccf3e8bd73bceeebf9e07e9ab73a1..fe84a350ef119b1d09f4192f9222de0e46925e4d 100644
--- a/ets2panda/parser/ETSparser.cpp
+++ b/ets2panda/parser/ETSparser.cpp
@@ -2047,7 +2047,8 @@ ir::AstNode *ETSParser::ParseAmbientSignature(const lexer::SourcePosition &start
     }
 
     // eat ":"
-    if (Lexer()->NextToken(); Lexer()->GetToken().KeywordType() != lexer::TokenType::KEYW_NUMBER) {
+    if (Lexer()->NextToken(); Lexer()->GetToken().KeywordType() != lexer::TokenType::KEYW_NUMBER &&
+                              Lexer()->GetToken().KeywordType() != lexer::TokenType::KEYW_INT) {
         // ambient_indexer_3.ets
         LogError(diagnostic::INDEX_TYPE_NOT_NUMBER);
 
diff --git a/ets2panda/test/ast/compiler/ets/DeclareIndexerTest.ets b/ets2panda/test/ast/compiler/ets/DeclareIndexerTest.ets
index 7cf36bcc8b7057d45402c54cb177cf50fe9a53d4..4bc211702aec007aadc16ba78c9c77aae9a249f8 100644
--- a/ets2panda/test/ast/compiler/ets/DeclareIndexerTest.ets
+++ b/ets2panda/test/ast/compiler/ets/DeclareIndexerTest.ets
@@ -17,6 +17,13 @@ declare class A  {
   [index: number]: string  // indexer declaration
 }
 
+declare class B {
+    [index: int] : number
+}
+
+declare interface C {
+     [index :int]: string
+ }
 
 function main () {
 
diff --git a/ets2panda/test/ast/compiler/ets/interface_ambient_indexer_3.ets b/ets2panda/test/ast/compiler/ets/interface_ambient_indexer_3.ets
deleted file mode 100644
index fdc663f300ef9f576d2d764f0a8638fa1446c038..0000000000000000000000000000000000000000
--- a/ets2panda/test/ast/compiler/ets/interface_ambient_indexer_3.ets
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (c) 2025 Huawei Device Co., Ltd.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-declare interface A {
-     [index :int]: string
- }
- /* @@? 17:14 Error SyntaxError: Index type must be number in index signature. */