diff --git a/threadfunc/thread_func.cpp b/threadfunc/thread_func.cpp
index fc83806..9c7004a 100644
--- a/threadfunc/thread_func.cpp
+++ b/threadfunc/thread_func.cpp
@@ -393,9 +393,9 @@ void CleanLogFile(std::string log_dir, size_t retain) {
 void DiskSpaceCheck() {
     std::string directory = "/opt/log";
     while (1) {
-        boost::filesystem::space_info si = boost::filesystem::space("/opt");
-        zlog_warn(zct, "disk free space:%llu for /opt", si.free);        
-        if (si.free <= 20000000) {            
+        boost::filesystem::space_info si = boost::filesystem::space("/opt");                
+        if (si.free <= 20000000) {     
+            zlog_warn(zct, "disk free space:%llu for /opt", si.free);       
             CleanLogFile(directory, 10);            
             boost::filesystem::space_info si1 = boost::filesystem::space("/opt");
             if (si1.free <= 20000000) {