diff --git a/Source/Core/Core/IOS/WFS/WFSSRV.h b/Source/Core/Core/IOS/WFS/WFSSRV.h
index 72432ae754..86302a80bb 100644
--- a/Source/Core/Core/IOS/WFS/WFSSRV.h
+++ b/Source/Core/Core/IOS/WFS/WFSSRV.h
@@ -50,6 +50,7 @@ private:
     IOCTL_WFS_UNMOUNT_VOLUME = 0x06,
     IOCTL_WFS_UNKNOWN_8 = 0x08,
     IOCTL_WFS_FLUSH = 0x0a,
+    IOCTL_WFS_MKDIR = 0x0c,
     IOCTL_WFS_GLOB_START = 0x0d,
     IOCTL_WFS_GLOB_NEXT = 0x0e,
     IOCTL_WFS_GLOB_END = 0x0f,