diff --git a/osaca/parser/parser_AArch64.py b/osaca/parser/parser_AArch64.py
index 73c4c9e..3978eb0 100755
--- a/osaca/parser/parser_AArch64.py
+++ b/osaca/parser/parser_AArch64.py
@@ -349,11 +349,11 @@ class ParserAArch64(BaseParser):
     def process_memory_address(self, memory_address):
         """Post-process memory address operand"""
         # Remove unnecessarily created dictionary entries during parsing
-        offset = None if 'offset' not in memory_address else memory_address['offset']
+        offset = memory_address.get('offset', None)
         if isinstance(offset, list) and len(offset) == 1:
             offset = offset[0]
-        base = None if 'base' not in memory_address else memory_address['base']
-        index = None if 'index' not in memory_address else memory_address['index']
+        base = memory_address.get('base', None)
+        index = memory_address.get('index', None)
         scale = 1
         if base is not None and 'name' in base and base['name'] == 'sp':
             base['prefix'] = 'x'
@@ -390,7 +390,7 @@ class ParserAArch64(BaseParser):
             rlist.append(
                 AttrDict.convert_dict(self.list_element.parseString(r, parseAll=True).asDict())
             )
-        index = None if 'index' not in register_list else register_list['index']
+        index = register_list.get('index', None)
         new_dict = AttrDict({dict_name: rlist, 'index': index})
         if len(new_dict[dict_name]) == 1:
             return AttrDict({self.REGISTER_ID: new_dict[dict_name][0]})
diff --git a/osaca/parser/parser_x86att.py b/osaca/parser/parser_x86att.py
index e80f278..b2e39e2 100755
--- a/osaca/parser/parser_x86att.py
+++ b/osaca/parser/parser_x86att.py
@@ -303,9 +303,9 @@ class ParserX86ATT(BaseParser):
     def process_memory_address(self, memory_address):
         """Post-process memory address operand"""
         # Remove unecessarily created dictionary entries during memory address parsing
-        offset = None if 'offset' not in memory_address else memory_address['offset']
-        base = None if 'base' not in memory_address else memory_address['base']
-        index = None if 'index' not in memory_address else memory_address['index']
+        offset = memory_address.get('offset', None)
+        base = memory_address.get('base', None)
+        index = memory_address.get('index', None)
         scale = 1 if 'scale' not in memory_address else int(memory_address['scale'])
         if isinstance(offset, str) and base is None and index is None:
             offset = {'value': offset}