diff --git a/src/connector/python/taos/cinterface.py b/src/connector/python/taos/cinterface.py
index 51e9a8667d..42dac3c2e8 100644
--- a/src/connector/python/taos/cinterface.py
+++ b/src/connector/python/taos/cinterface.py
@@ -49,7 +49,7 @@ def _load_taos():
     try:
         return load_func[platform.system()]()
     except:
-        sys.exit("unsupported platform to TDengine connector")
+        raise InterfaceError('unsupported platform or failed to load taos client library')
 
 
 _libtaos = _load_taos()