diff --git a/reactos/drivers/network/ndis/ndis/miniport.c b/reactos/drivers/network/ndis/ndis/miniport.c
index d05f7cb332f..42e79713007 100644
--- a/reactos/drivers/network/ndis/ndis/miniport.c
+++ b/reactos/drivers/network/ndis/ndis/miniport.c
@@ -182,8 +182,6 @@ MiniIndicateData(
           AdapterBinding = CONTAINING_RECORD(CurrentEntry, ADAPTER_BINDING, AdapterListEntry);
 	  NDIS_DbgPrint(DEBUG_MINIPORT, ("AdapterBinding = %x\n", AdapterBinding));
 
-          KeReleaseSpinLock(&Adapter->NdisMiniportBlock.Lock, OldIrql);
-
 #ifdef DBG
           if(!AdapterBinding)
             {
@@ -226,8 +224,6 @@ MiniIndicateData(
               LookaheadBufferSize,
               PacketSize);
 
-          KeAcquireSpinLock(&Adapter->NdisMiniportBlock.Lock, &OldIrql);
-
           CurrentEntry = CurrentEntry->Flink;
         }
     }
diff --git a/reactos/drivers/network/ndis/ndis/protocol.c b/reactos/drivers/network/ndis/ndis/protocol.c
index 7ea8dc46b33..ef344131f33 100644
--- a/reactos/drivers/network/ndis/ndis/protocol.c
+++ b/reactos/drivers/network/ndis/ndis/protocol.c
@@ -67,6 +67,7 @@ ProIndicatePacket(
 {
   UINT BufferedLength;
   UINT PacketLength;
+  KIRQL OldIrql;
 
   NDIS_DbgPrint(MAX_TRACE, ("Called.\n"));
 
@@ -76,6 +77,8 @@ ProIndicatePacket(
 
   NdisQueryPacket(Packet, NULL, NULL, NULL, &PacketLength);
 
+  KeRaiseIrql(DISPATCH_LEVEL, &OldIrql);
+
   NDIS_DbgPrint(MAX_TRACE, ("acquiring miniport block lock\n"));
   KeAcquireSpinLockAtDpcLevel(&Adapter->NdisMiniportBlock.Lock);
     {
@@ -103,6 +106,8 @@ ProIndicatePacket(
     }
   KeReleaseSpinLockFromDpcLevel(&Adapter->NdisMiniportBlock.Lock);
 
+  KeLowerIrql(OldIrql);
+
   return STATUS_SUCCESS;
 }