diff --git a/src/freedreno/afuc/lexer.l b/src/freedreno/afuc/lexer.l
index 8c3113d1c16..830ba83db70 100644
--- a/src/freedreno/afuc/lexer.l
+++ b/src/freedreno/afuc/lexer.l
@@ -40,7 +40,7 @@ extern YYSTYPE yylval;
 "\n"                              yylineno++;
 [ \t]                             ; /* ignore whitespace */
 ";"[^\n]*"\n"                     yylineno++; /* ignore comments */
-[1-9][0-9]*                       yylval.num = strtoul(yytext, NULL, 0);    return T_INT;
+0|[1-9][0-9]*                     yylval.num = strtoul(yytext, NULL, 0);    return T_INT;
 "0x"[0-9a-fA-F]*                  yylval.num = strtoul(yytext, NULL, 0);    return T_HEX;
 
 "$"[0-9a-fA-F][0-9a-fA-F]         yylval.num = parse_reg(yytext); return T_REGISTER;