diff --git a/port/linux/test/VM-test.cpp b/port/linux/test/VM-test.cpp
index 7dcf462b0..a5cbc41de 100644
--- a/port/linux/test/VM-test.cpp
+++ b/port/linux/test/VM-test.cpp
@@ -16,11 +16,9 @@ TEST(VM, a_1) {
     PikaObj* root = newRootObj((char*)"root", New_PikaStdLib_SysObj);
 
     int lineAddr = 0;
-    while (1) {
+    int size = strGetSize(pikaAsm);
+    while (lineAddr < size) {
         lineAddr = pikaVM_run(root, pikaAsm, lineAddr);
-        if (lineAddr < 0) {
-            break;
-        }
     }
 
     obj_deinit(root);
diff --git a/src/PikaVM.c b/src/PikaVM.c
index d11ef8389..b5594a349 100644
--- a/src/PikaVM.c
+++ b/src/PikaVM.c
@@ -17,11 +17,16 @@ static int32_t getLineSize(char* str) {
 
 int32_t pikaVM_run(PikaObj* self, char* pikaAsm, int32_t lineAddr) {
     Args* buffs = New_strBuff();
-    int32_t size = getLineSize(pikaAsm + lineAddr);
-    char* line = pikaAsm + lineAddr;
+    int32_t nextAddr = lineAddr;
+    char* code = pikaAsm + lineAddr;
+    int32_t lineSize = getLineSize(code);
+    nextAddr = lineAddr + lineSize + 1;
+    char* line = args_getBuff(buffs, lineSize + 1);
+    memcpy(line, code, lineSize);
+    line[lineSize + 1] = 0;
 
     goto exit;
 exit:
     args_deinit(buffs);
-    return -1;
+    return nextAddr;
 }
\ No newline at end of file