diff --git a/setup.py b/setup.py
index 747ca1be0e544e0022fca725b327dd0e9698057b..d328476b4a806ba5e03c063158293cde052ba914 100755
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@ with open("README.md", "r", encoding="utf-8") as fh:
 
 setup(
     name="quingo",
-    version="0.4.0",
+    version="0.4.1",
     author="Xiang Fu",
     author_email="gtaifu@gmail.com",
     description="Quingo Runtime System",
diff --git a/src/quingo/core/compile.py b/src/quingo/core/compile.py
index d194c7c502966a66543e95f5c289502b1a17f7e5..4db20f3f090d097ff5c833ed2c025a6518a98302 100644
--- a/src/quingo/core/compile.py
+++ b/src/quingo/core/compile.py
@@ -1,12 +1,13 @@
+import logging
+import subprocess
 from pathlib import Path
-import subprocess, logging
+
+from quingo.backend.qisa import Qisa, get_qisa_name, get_suffix
 from quingo.core.compiler_config import get_mlir_path
-from quingo.core.quingo_task import Quingo_task
 from quingo.core.preparation import gen_main_file
-from quingo.core.quingo_logger import quingo_err, get_logger
+from quingo.core.quingo_logger import get_logger, quingo_err
+from quingo.core.quingo_task import Quingo_task
 from quingo.utils import ensure_path
-from quingo.backend.qisa import Qisa, get_qisa_name, get_suffix
-
 
 logger = get_logger((__name__).split(".")[-1])
 
@@ -94,11 +95,11 @@ def compose_cl_cmd(
 
     opt_out_fn = '-o "{}"'.format(str(qasm_fn))
 
-    config_fn = '--config-fn="{}"'.format(str(configfile))
+    config_fn = '--config-fn="{}"'.format(str(configfile)) if len(configfile) > 0 else ""
 
-    chip_path_ = '--chip-config="{}"'.format(str(chip_path))
+    chip_path_ = '--chip-config="{}"'.format(str(chip_path)) if len(chip_path) > 0 else ""
 
-    target_ = '--target="{}"'.format(str(target))
+    target_ = '--target="{}"'.format(str(target)) if len(target) > 0 else ""
     # mq_path = '--mq-path="{}"'.format(str(mq_fn))
 
     cmd_eles = [
@@ -115,7 +116,6 @@ def compose_cl_cmd(
         opt_out_fn,
     ]
 
-
     compile_cmd = " ".join([ele for ele in cmd_eles if ele.strip() != ""])
 
     return compile_cmd
diff --git a/unittest/test_compile_cmd.py b/unittest/test_compile_cmd.py
index 398ac889b491ec7179460f926071d5d555d79e04..d6a4176496ffc58959fb9ba5988e9785e7df999e 100644
--- a/unittest/test_compile_cmd.py
+++ b/unittest/test_compile_cmd.py
@@ -24,15 +24,15 @@ class TestCompileCmd:
 
         mlir_path = Path(get_mlir_path())
         cmd = compose_cl_cmd(task, qasm_fn, mlir_path)
+        print("cmd:", cmd)
         cmd_eles = cmd.split()
-        assert len(cmd_eles) == 13
+        assert len(cmd_eles) == 10
         assert mlir_path.resolve().samefile(cmd_eles[0].strip('"'))
         assert cmd_eles[1] == '-u'
         assert cmd_eles[2] == '"{}"'.format(task.cl_entry_fn.resolve())
-        assert cmd_eles[3] == "-I"
-        assert cmd_eles[5] == "-I"
-        assert cmd_eles[10] == "--isa=qcis"
-        assert cmd_eles[11] == "-o"
+        assert len([ele for ele in cmd_eles if ele == "-I"]) == 2
+        assert  "--isa=qcis" in cmd_eles
+        assert "-o" in cmd_eles
         # assert Path(qasm_fn).samefile(cmd_eles[8].strip('"'))
 
     def test_compile(self):