diff --git a/es2panda/compiler/core/function.cpp b/es2panda/compiler/core/function.cpp
index 939d1740acf9659a229b3be83d95518f4fda64e2..c7258235b59506638125ec22eeac23b0fbcc778c 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();