diff --git a/common/sai_testbed.py b/common/sai_testbed.py
index e2d27cab..c4aaac62 100644
--- a/common/sai_testbed.py
+++ b/common/sai_testbed.py
@@ -110,7 +110,7 @@ def __init__(self, base_dir, name, with_traffic, skip_dataplane=False):
 
     @staticmethod
     def __import_module(root_path, module_name):
-        module_specs = importlib.util.find_spec(module_name, [root_path])
+        module_specs = importlib.util.spec_from_file_location(module_name, os.path.join(root_path, f"{module_name}.py"))
         return module_specs.loader.load_module()
 
     @staticmethod
@@ -123,11 +123,11 @@ def spawn_asic(base_dir, cfg, asic_type="npu"):
         asic_mod = None
         module_name = f"sai_{asic_type}"
         try:
-            asic_mod = self.__import_module(asic_dir, module_name)
+            asic_mod = SaiTestbed.__import_module(asic_dir, module_name)
         except:
             logging.info("No {} specific module defined..".format(params["asic"]))
             try:
-                asic_mod = self.__import_module(asic_dir + "/../", module_name)
+                asic_mod = SaiTestbed.__import_module(asic_dir + "/../", module_name)
             except:
                 logging.warning("No NPU specific module defined.")