diff --git a/plugins/mongodb/index.py b/plugins/mongodb/index.py
index fb8bc61c2..4480ba02b 100755
--- a/plugins/mongodb/index.py
+++ b/plugins/mongodb/index.py
@@ -1527,7 +1527,7 @@ def runLog():
 
 def installPreInspectionDebainCheck(sysId,version):
     if version == '8.0':
-        if sysId < 12:
+        if int(sysId) < 12:
             return "[%s]需要至少debain[12]" % (version,)
     return ''