diff --git a/osaca/parser/parser_x86att.py b/osaca/parser/parser_x86att.py
index b6e42af..391b52f 100755
--- a/osaca/parser/parser_x86att.py
+++ b/osaca/parser/parser_x86att.py
@@ -26,7 +26,7 @@ class ParserX86ATT(BaseParser):
         # Define x86 assembly identifier
         relocation = pp.Combine(pp.Literal('@') + pp.Word(pp.alphas))
         id_offset = pp.Word(pp.nums) + pp.Suppress(pp.Literal('+'))
-        first = pp.Word(pp.alphas + '_.', exact=1)
+        first = pp.Word(pp.alphanums + '_.', exact=1)
         rest = pp.Word(pp.alphanums + '$_.+-')
         identifier = pp.Group(
             pp.Optional(id_offset).setResultsName('offset')