diff --git a/README.md b/README.md
index 6381f05..807cc01 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,8 @@ Python2 users
 
 ## Change Log 
 
+* [2022-05-06]
+  * 修复version check bug
 * [2020-10-29]
   * 增加支持强制扫描泛解析的域名，需要加 `-w` 参数
 * [2020-10-26]
diff --git a/subDomainsBrute.py b/subDomainsBrute.py
index c248821..110dffb 100644
--- a/subDomainsBrute.py
+++ b/subDomainsBrute.py
@@ -18,7 +18,7 @@
 from lib.cmdline import parse_args
 
 
-if sys.version.split()[0] >= '3.5':
+if sys.version_info.major >= 3 and sys.version_info.minor >= 5:
     from lib.scanner_py3 import SubNameBrute
     from lib.common_py3 import load_dns_servers, load_next_sub, print_msg, get_out_file_name, \
         user_abort, wildcard_test, get_sub_file_path