diff --git a/reactos/drivers/network/afd/afd/lock.c b/reactos/drivers/network/afd/afd/lock.c
index 4e2d87a8e77..c64f8102e34 100644
--- a/reactos/drivers/network/afd/afd/lock.c
+++ b/reactos/drivers/network/afd/afd/lock.c
@@ -156,7 +156,7 @@ PAFD_WSABUF LockBuffers( PAFD_WSABUF Buf, UINT Count,
 	    if( MapBuf[i].Mdl ) {
 		AFD_DbgPrint(MID_TRACE,("Probe and lock pages\n"));
 		_SEH2_TRY {
-		    MmProbeAndLockPages( MapBuf[i].Mdl, KernelMode,
+		    MmProbeAndLockPages( MapBuf[i].Mdl, UserMode,
 				         Write ? IoModifyAccess : IoReadAccess );
 		} _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) {
 		    LockFailed = TRUE;