diff --git a/src/sys/read.c b/src/sys/read.c
index 9bc00b59..fd772a2b 100644
--- a/src/sys/read.c
+++ b/src/sys/read.c
@@ -277,7 +277,9 @@ NTSTATUS FspFsvolReadComplete(
 {
     FSP_ENTER_IOC(PAGED_CODE());
 
+    FSP_FSCTL_TRANSACT_REQ *Request = FspIrpRequest(Irp);
     PFILE_OBJECT FileObject = IrpSp->FileObject;
+    FSP_FILE_NODE *FileNode = FileObject->FsContext;
     LARGE_INTEGER ReadOffset = IrpSp->Parameters.Read.ByteOffset;
     BOOLEAN PagingIo = BooleanFlagOn(Irp->Flags, IRP_PAGING_IO);
     BOOLEAN SynchronousIo = BooleanFlagOn(FileObject->Flags, FO_SYNCHRONOUS_IO);
@@ -297,6 +299,9 @@ NTSTATUS FspFsvolReadComplete(
                 ReadOffset.QuadPart + Response->IoStatus.Information;
     }
 
+    FspFileNodeReleaseOwner(FileNode, Full, Request);
+        /* will also clear FspIrpFlags() */
+
     Irp->IoStatus.Information = Response->IoStatus.Information;
     Result = STATUS_SUCCESS;
 
@@ -338,7 +343,7 @@ static VOID FspFsvolReadNonCachedRequestFini(FSP_FSCTL_TRANSACT_REQ *Request, PV
     if (0 != SafeMdl)
         FspSafeMdlDelete(SafeMdl);
 
-    if (0 != Irp)
+    if (0 != Irp && 0 != FspIrpFlags(Irp))
     {
         PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation(Irp);
         FSP_FILE_NODE *FileNode = IrpSp->FileObject->FsContext;
diff --git a/src/sys/write.c b/src/sys/write.c
index 87a53123..e3eba3a8 100644
--- a/src/sys/write.c
+++ b/src/sys/write.c
@@ -368,6 +368,7 @@ NTSTATUS FspFsvolWriteComplete(
 {
     FSP_ENTER_IOC(PAGED_CODE());
 
+    FSP_FSCTL_TRANSACT_REQ *Request = FspIrpRequest(Irp);
     PFILE_OBJECT FileObject = IrpSp->FileObject;
     FSP_FILE_NODE *FileNode = FileObject->FsContext;
     LARGE_INTEGER WriteOffset = IrpSp->Parameters.Write.ByteOffset;
@@ -395,6 +396,9 @@ NTSTATUS FspFsvolWriteComplete(
                 WriteOffset.QuadPart + Response->IoStatus.Information;
     }
 
+    FspFileNodeReleaseOwner(FileNode, Full, Request);
+        /* will also clear FspIrpFlags() */
+
     Irp->IoStatus.Information = Response->IoStatus.Information;
     Result = STATUS_SUCCESS;
 
@@ -436,7 +440,7 @@ static VOID FspFsvolWriteNonCachedRequestFini(FSP_FSCTL_TRANSACT_REQ *Request, P
     if (0 != SafeMdl)
         FspSafeMdlDelete(SafeMdl);
 
-    if (0 != Irp)
+    if (0 != Irp && 0 != FspIrpFlags(Irp))
     {
         PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation(Irp);
         FSP_FILE_NODE *FileNode = IrpSp->FileObject->FsContext;