diff --git a/jc/parsers/ifconfig.py b/jc/parsers/ifconfig.py
index 021f5026..23d67fdc 100644
--- a/jc/parsers/ifconfig.py
+++ b/jc/parsers/ifconfig.py
@@ -264,7 +264,7 @@ def _process(proc_data: List[JSONDictType]) -> List[JSONDictType]:
             try:
                 if entry['ipv4_mask'].startswith('0x'):
                     new_mask = entry['ipv4_mask']
-                    new_mask = new_mask.lstrip('0x')
+                    new_mask = new_mask[2:]
                     new_mask = '.'.join(str(int(i, 16)) for i in [new_mask[i:i + 2] for i in range(0, len(new_mask), 2)])
                     entry['ipv4_mask'] = new_mask
             except (ValueError, TypeError, AttributeError):
@@ -289,7 +289,7 @@ def _process(proc_data: List[JSONDictType]) -> List[JSONDictType]:
                     try:
                         if ip_address['mask'].startswith('0x'):
                             new_mask = ip_address['mask']
-                            new_mask = new_mask.lstrip('0x')
+                            new_mask = new_mask[2:]
                             new_mask = '.'.join(str(int(i, 16)) for i in [new_mask[i:i + 2] for i in range(0, len(new_mask), 2)])
                             ip_address['mask'] = new_mask
                     except (ValueError, TypeError, AttributeError):