diff --git a/es2panda/compiler/core/function.cpp b/es2panda/compiler/core/function.cpp
index b9a4bce84f25fb5ddf8ee00fc4d97bebd9ee837a..5fb0ba8c80c2b443d71c729f8344cf7893bcf070 100644
--- a/es2panda/compiler/core/function.cpp
+++ b/es2panda/compiler/core/function.cpp
@@ -156,7 +156,9 @@ static void CompileFunction(PandaGen *pg)
         pg->StoreAccToLexEnv(pg->RootNode(), funcParamScope->Find(funcParamScope->NameVar()->Name()), true);
     }
 
+    pg->SetSourceLocationFlag(lexer::SourceLocationFlag::INVALID_SOURCE_LOCATION);
     pg->FunctionEnter();
+    pg->SetSourceLocationFlag(lexer::SourceLocationFlag::VALID_SOURCE_LOCATION);
     CompileFunctionParameterDeclaration(pg, decl);
     const ir::AstNode *body = decl->Body();