diff --git a/fs/vfs/fs_open.c b/fs/vfs/fs_open.c
index d908feacb9..0516b5db6e 100644
--- a/fs/vfs/fs_open.c
+++ b/fs/vfs/fs_open.c
@@ -120,9 +120,7 @@ int nx_vopen(FAR const char *path, int oflags, va_list ap)
 
   if ((oflags & (O_WRONLY | O_CREAT)) != 0)
     {
-      va_start(ap, oflags);
       mode = va_arg(ap, mode_t);
-      va_end(ap);
     }
 #endif
 
diff --git a/tools/Makefile.win b/tools/Makefile.win
index 8fbd1fe365..b6a472f142 100644
--- a/tools/Makefile.win
+++ b/tools/Makefile.win
@@ -38,7 +38,7 @@ export SHELL=cmd
 TOPDIR := ${shell echo %CD%}
 -include $(TOPDIR)\.config
 -include $(TOPDIR)/.version
--include $(TOPDIR)\tools\Config.mk
+include $(TOPDIR)\tools\Config.mk
 -include $(TOPDIR)\Make.defs
 
 # In case .version file does not exist