diff --git a/inc/winfsp/fsctl.h b/inc/winfsp/fsctl.h
index f5d7293a..905d182c 100644
--- a/inc/winfsp/fsctl.h
+++ b/inc/winfsp/fsctl.h
@@ -228,7 +228,7 @@ enum
     UINT32 CasePreservedExtendedAttributes:1;   /* preserve case of EA (default is UPPERCASE) */\
     UINT32 WslFeatures:1;                   /* support features required for WSLinux */\
     UINT32 DirectoryMarkerAsNextOffset:1;   /* directory marker is next offset instead of last name */\
-    UINT32 RejectIrpPriorToTransact0:1;     /* reject IRP's prior to FspFsctlTransact with 0 buffers */\
+    UINT32 RejectIrpPriorToTransact0:1;     /* DEPRECATED: reject IRP's prior to FspFsctlTransact0 */\
     UINT32 SupportsPosixUnlinkRename:1;     /* file system supports POSIX-style unlink and rename */\
     UINT32 PostDispositionWhenNecessaryOnly:1;  /* post Disposition for dirs or READONLY attr check */\
     UINT32 KmReservedFlags:1;\
diff --git a/src/sys/volume.c b/src/sys/volume.c
index f5a177fb..8bea3c3c 100644
--- a/src/sys/volume.c
+++ b/src/sys/volume.c
@@ -249,6 +249,11 @@ static NTSTATUS FspVolumeCreateNoLock(
     VolumeParams.AlwaysUseDoubleBuffering = 1;
 #endif
 
+    /*
+     * Hardcode the RejectIrpPriorToTransact0 = 1 setting.
+     */
+    VolumeParams.RejectIrpPriorToTransact0 = 1;
+
     /* load any fsext provider */
     if (0 != VolumeParams.FsextControlCode)
     {
diff --git a/tst/winfsp-tests/memfs-test.c b/tst/winfsp-tests/memfs-test.c
index 343685ac..9246cf96 100644
--- a/tst/winfsp-tests/memfs-test.c
+++ b/tst/winfsp-tests/memfs-test.c
@@ -67,6 +67,9 @@ void *memfs_start_ex(ULONG Flags, ULONG FileInfoTimeout)
     Result = MemfsStart(Memfs);
     ASSERT(NT_SUCCESS(Result));
 
+    Result = FspFsctlTransact(MemfsFileSystem(Memfs)->VolumeHandle, 0, 0, 0, 0, FALSE);
+    ASSERT(NT_SUCCESS(Result));
+
     memfs_running = 1;
     memfs_handle = MemfsFileSystem(Memfs)->VolumeHandle;