diff --git a/imcsdk/imccoreutils.py b/imcsdk/imccoreutils.py
index 4808110..538e1db 100644
--- a/imcsdk/imccoreutils.py
+++ b/imcsdk/imccoreutils.py
@@ -195,7 +195,12 @@ def load_mo(elem):
 
     mo_class_id = elem.tag
     mo_class = load_class(mo_class_id)
-    mo_class_params = inspect.getargspec(mo_class.__init__)[0][2:]
+    if sys.version_info > (3, 0):
+        # Python 3 code in this block
+        mo_class_params = inspect.getfullargspec(mo_class.__init__)[0][2:]
+    else:
+        # Python 2 code in this block
+        mo_class_params = inspect.getargspec(mo_class.__init__)[0][2:]
     mo_class_param_dict = {}
     for param in mo_class_params:
         mo_class_param_dict[param] = elem.attrib[
diff --git a/imcsdk/imcmo.py b/imcsdk/imcmo.py
index 0659f7d..ddb215e 100644
--- a/imcsdk/imcmo.py
+++ b/imcsdk/imcmo.py
@@ -17,6 +17,7 @@
 
 import logging
 import os
+import sys
 
 from . import imcgenutils
 from . import imccoreutils
@@ -658,7 +659,12 @@ def __get_mo_obj(self, class_id):
         import inspect
 
         mo_class = imccoreutils.load_class(class_id)
-        mo_class_params = inspect.getargspec(mo_class.__init__)[0][2:]
+        if sys.version_info > (3, 0):
+            # Python 3 code in this block
+            mo_class_params = inspect.getfullargspec(mo_class.__init__)[0][2:]
+        else:
+            # Python 2 code in this block
+            mo_class_params = inspect.getargspec(mo_class.__init__)[0][2:]
         mo_class_param_dict = {}
         for param in mo_class_params:
             prop = imccoreutils.get_prop_meta(mo_class, param)