diff --git a/reactos/sdk/lib/drivers/csq/csq.c b/reactos/sdk/lib/drivers/csq/csq.c
index 793193c3c8d..6402938f9b1 100644
--- a/reactos/sdk/lib/drivers/csq/csq.c
+++ b/reactos/sdk/lib/drivers/csq/csq.c
@@ -290,6 +290,9 @@ IoCsqInsertIrpEx(
         if(!IoSetCancelRoutine(Irp, NULL))
             break;
 
+
+        Irp->Tail.Overlay.DriverContext[3] = 0;
+
         /* OK, looks like we have to de-queue and complete this ourselves */
         Csq->CsqRemoveIrp(Csq, Irp);
         Csq->CsqCompleteCanceledIrp(Csq, Irp);
@@ -363,6 +366,8 @@ IoCsqRemoveIrp(
 
             ASSERT(Context->Csq == Csq);
         }
+
+        Irp->Tail.Overlay.DriverContext[3] = 0;
     }
     while(0);
 
@@ -423,6 +428,8 @@ IoCsqRemoveNextIrp(
             ASSERT(Context->Csq == Csq);
         }
 
+        Irp->Tail.Overlay.DriverContext[3] = 0;
+
         break;
     }