diff --git a/src/Storages/FileLog/DirectoryWatcherBase.cpp b/src/Storages/FileLog/DirectoryWatcherBase.cpp
index 00c37fe9a75..4f2a775c265 100644
--- a/src/Storages/FileLog/DirectoryWatcherBase.cpp
+++ b/src/Storages/FileLog/DirectoryWatcherBase.cpp
@@ -65,9 +65,10 @@ void DirectoryWatcherBase::watchFunc()
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wreserved-identifier"
         FD_ZERO(&fds);
-        FD_SET(fd, &fds);
 #pragma clang diagnostic pop
 
+        FD_SET(fd, &fds);
+
         struct timeval tv;
         tv.tv_sec = 0;
         tv.tv_usec = 200000;