diff --git a/include/xkbsrv.h b/include/xkbsrv.h
index 08989e1a4..14bcc0266 100644
--- a/include/xkbsrv.h
+++ b/include/xkbsrv.h
@@ -209,9 +209,6 @@ typedef struct {
 
 #define	Status		int
 
-extern _X_EXPORT void XkbSetExtension(DeviceIntPtr device,
-                                      ProcessInputProc proc);
-
 extern _X_EXPORT void XkbFreeCompatMap(XkbDescPtr /* xkb */ ,
                                        unsigned int /* which */ ,
                                        Bool     /* freeMap */
diff --git a/xkb/xkbsrv_priv.h b/xkb/xkbsrv_priv.h
index 0e414c084..945b26a0c 100644
--- a/xkb/xkbsrv_priv.h
+++ b/xkb/xkbsrv_priv.h
@@ -114,6 +114,7 @@ void XkbFakeDeviceButton(DeviceIntPtr dev, int press, int button);
 void XkbUseMsg(void);
 int XkbProcessArguments(int argc, char **argv, int i);
 Bool XkbInitPrivates(void);
+void XkbSetExtension(DeviceIntPtr device, ProcessInputProc proc);
 
 
 extern DevPrivateKeyRec xkbDevicePrivateKeyRec;