diff --git a/mkspecs/common/vxworks/qplatformdefs.h b/mkspecs/common/vxworks/qplatformdefs.h
index 75bbb3e0f9a..0679f729681 100644
--- a/mkspecs/common/vxworks/qplatformdefs.h
+++ b/mkspecs/common/vxworks/qplatformdefs.h
@@ -34,6 +34,8 @@
 #define QT_SNPRINTF             ::snprintf
 #define QT_VSNPRINTF            ::vsnprintf
 
+#define S_ISVTX 01000
+
 /* vxworks exposes these definitions only when _POSIX_C_SOURCE >=200809L but we don't want to set this, as it hides other API */
 #ifndef UTIME_NOW
 #  define UTIME_NOW       ((1l << 30) - 1l)
diff --git a/src/corelib/io/qfilesystemengine_unix.cpp b/src/corelib/io/qfilesystemengine_unix.cpp
index d94cd452cfe..a3d71aeeaba 100644
--- a/src/corelib/io/qfilesystemengine_unix.cpp
+++ b/src/corelib/io/qfilesystemengine_unix.cpp
@@ -12,6 +12,7 @@
 #include <QtCore/qoperatingsystemversion.h>
 #include <QtCore/private/qcore_unix_p.h>
 #include <QtCore/private/qfiledevice_p.h>
+#include <QtCore/private/qfunctions_p.h>
 #include <QtCore/qvarlengtharray.h>
 #ifndef QT_BOOTSTRAPPED
 # include <QtCore/qstandardpaths.h>