diff --git a/dlls/ddraw/x11_private.h b/dlls/ddraw/x11_private.h
index bba192a43bd..e135fa8c014 100644
--- a/dlls/ddraw/x11_private.h
+++ b/dlls/ddraw/x11_private.h
@@ -4,6 +4,7 @@
 /* This file contains all X11 private and specific definitions.
  * It may also be used by all ports that reuse X11 stuff (like XF86 DGA)
  */
+#include "config.h"
 #include "ts_xlib.h"
 #include "ts_xutil.h"
 
diff --git a/dlls/winmm/wineoss/oss.h b/dlls/winmm/wineoss/oss.h
index 6bebf5f55db..a8aab797847 100644
--- a/dlls/winmm/wineoss/oss.h
+++ b/dlls/winmm/wineoss/oss.h
@@ -1,5 +1,7 @@
 /* Definition for OSS drivers : wine multimedia system */
 
+#include "config.h"
+
 #if defined(HAVE_SYS_SOUNDCARD_H)
 # include <sys/soundcard.h>
 #elif defined(HAVE_MACHINE_SOUNDCARD_H)
diff --git a/include/cdrom.h b/include/cdrom.h
index 881eb1b5c33..8b6e3c9fb26 100644
--- a/include/cdrom.h
+++ b/include/cdrom.h
@@ -12,6 +12,7 @@
 
 #include <stdlib.h>
 #include <unistd.h>
+#include "config.h"
 #include "windef.h"
 #include "wine/windef16.h"
 
diff --git a/include/elfdll.h b/include/elfdll.h
index ee82a9e0532..4393107de7b 100644
--- a/include/elfdll.h
+++ b/include/elfdll.h
@@ -1,6 +1,7 @@
 #ifndef __WINE_ELFDLL_H
 #define __WINE_ELFDLL_H
 
+#include "config.h"
 #include "module.h"
 #include "windef.h"
 
diff --git a/windows/x11drv/wineclipsrv.c b/windows/x11drv/wineclipsrv.c
index 8285ae9e586..c54d2f5eb63 100644
--- a/windows/x11drv/wineclipsrv.c
+++ b/windows/x11drv/wineclipsrv.c
@@ -51,6 +51,8 @@
 #include <X11/Xos.h>
 #include <X11/Xatom.h>
 
+#include "config.h"
+
 /*
  *  Lightweight debug definitions for Wine Clipboard Server.
  *  The standard FIXME, ERR, WARN & TRACE classes are supported