diff --git a/include/wx/msw/chkconf.h b/include/wx/msw/chkconf.h
index 08a3ffea9f..51aede9543 100644
--- a/include/wx/msw/chkconf.h
+++ b/include/wx/msw/chkconf.h
@@ -419,6 +419,7 @@
 #           undef wxUSE_FSWATCHER
 #           define wxUSE_FSWATCHER 0
 #       endif
+#   endif
 #endif /* !wxUSE_THREADS */
 
 #if defined(__WXUNIVERSAL__) && wxUSE_POSTSCRIPT_ARCHITECTURE_IN_MSW && !wxUSE_POSTSCRIPT