diff --git a/tools/mo/openvino/tools/mo/utils/ir_reader/extenders/parameter_extender.py b/tools/mo/openvino/tools/mo/utils/ir_reader/extenders/parameter_extender.py
index 488c4a79b4e..7c62ea373cd 100644
--- a/tools/mo/openvino/tools/mo/utils/ir_reader/extenders/parameter_extender.py
+++ b/tools/mo/openvino/tools/mo/utils/ir_reader/extenders/parameter_extender.py
@@ -26,7 +26,7 @@ class Parameter_extender(Extender):
                     shape[i] = -1
                     if ".." in dim:
                         has_shapes_with_boundaries = True
-            shape = shape_array([d if d != -1 else dynamic_dimension_value for d in shape])
+            shape = shape_array([d if d not in [-1, '?'] else dynamic_dimension_value for d in shape])
 
             if has_shapes_with_boundaries:
                 shape_list = []