diff --git a/ets2panda/parser/ETSparser.cpp b/ets2panda/parser/ETSparser.cpp
index 6a1ca88c8ba51e4efcefd264f849c93a809e9a62..99bbca1b39a92171d3216b81c6ad95820559be7a 100644
--- a/ets2panda/parser/ETSparser.cpp
+++ b/ets2panda/parser/ETSparser.cpp
@@ -2049,6 +2049,7 @@ ir::FunctionDeclaration *ETSParser::ParseFunctionDeclaration(bool canBeAnonymous
     }
 
     if (Lexer()->TryEatTokenType(lexer::TokenType::PUNCTUATOR_MULTIPLY)) {
+        LogError(diagnostic::GENERATOR_FUNCTION);
         newStatus |= ParserStatus::GENERATOR_FUNCTION;
     }
 
diff --git a/ets2panda/test/ast/parser/ets/generator_function.ets b/ets2panda/test/ast/parser/ets/generator_function.ets
new file mode 100644
index 0000000000000000000000000000000000000000..7f865bb644004d26a4883231dd986a68aa88f577
--- /dev/null
+++ b/ets2panda/test/ast/parser/ets/generator_function.ets
@@ -0,0 +1,17 @@
+/**
+ * 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.
+ */
+
+function* f() {}
+/* @@? 16:11 Error SyntaxError: Generator functions are not supported, please use async/await mechanism for multitasking */
diff --git a/ets2panda/util/diagnostic/syntax.yaml b/ets2panda/util/diagnostic/syntax.yaml
index a412c35ab549ada14459b3f41c431bdf0075ed09..47f5f4608b7bc2c76e267511278869a77b03821a 100644
--- a/ets2panda/util/diagnostic/syntax.yaml
+++ b/ets2panda/util/diagnostic/syntax.yaml
@@ -1230,4 +1230,8 @@ syntax:
 
 - name: DEEP_NESTING
   id: 305
-  message: "Maximum allowed nesting level exceeded."
\ No newline at end of file
+  message: "Maximum allowed nesting level exceeded."
+
+- name: GENERATOR_FUNCTION
+  id: 306
+  message: "Generator functions are not supported, please use async/await mechanism for multitasking"