diff --git a/port/linux/test/VM-test.cpp b/port/linux/test/VM-test.cpp
index a9b2483a2..366d9aaf1 100644
--- a/port/linux/test/VM-test.cpp
+++ b/port/linux/test/VM-test.cpp
@@ -10,8 +10,9 @@ extern "C" {
 #include "dataQueue.h"
 #include "dataStrs.h"
 
+/* head infomations */
 char* Parser_LineToAsm(Args* buffs, char* line, Stack* blockStack);
-
+char* Parser_multiLineToAsm(Args* outBuffs, char* multiLine);
 }
 
 TEST(VM, num1) {
diff --git a/port/linux/test/parse-test.cpp b/port/linux/test/parse-test.cpp
index 673385296..35c5873be 100644
--- a/port/linux/test/parse-test.cpp
+++ b/port/linux/test/parse-test.cpp
@@ -5,6 +5,9 @@ extern "C" {
 #include "dataMemory.h"
 #include "dataStrs.h"
 
+/* head infomation */
+typedef QueueObj AST;
+char* Parser_multiLineToAsm(Args* outBuffs, char* multiLine);
 char* AST_toPikaASM(AST* ast, Args* outBuffs);
 AST* AST_parseLine(char* line, Stack* blockStack);
 char* Parser_LineToAsm(Args* buffs, char* line, Stack* blockStack);