diff --git a/src/sys/volume.c b/src/sys/volume.c
index f479eada..55e67ddd 100644
--- a/src/sys/volume.c
+++ b/src/sys/volume.c
@@ -639,7 +639,7 @@ NTSTATUS FspVolumeWork(
      * so that we can disassociate the Request on failure and release ownership
      * back to the caller.
      */
-    if (!FspIoqPostIrpEx(FsvolDeviceExtension->Ioq, Irp, !BestEffort, &Result))
+    if (!FspIoqPostIrpEx(FsvolDeviceExtension->Ioq, Irp, BestEffort, &Result))
     {
         Request->Hint = 0;
         FspIrpRequest(Irp) = 0;