diff --git a/reactos/drivers/base/beep/beep.c b/reactos/drivers/base/beep/beep.c
index 45addc6f50f..444f0f07c86 100644
--- a/reactos/drivers/base/beep/beep.c
+++ b/reactos/drivers/base/beep/beep.c
@@ -38,6 +38,10 @@ BeepDPC(IN PKDPC Dpc,
 {
     PDEVICE_EXTENSION DeviceExtension = DeviceObject->DeviceExtension;
 
+    UNREFERENCED_PARAMETER(Dpc);
+    UNREFERENCED_PARAMETER(SystemArgument1);
+    UNREFERENCED_PARAMETER(SystemArgument2);
+
     /* Stop the beep */
     HalMakeBeep(0);
 
@@ -368,6 +372,8 @@ DriverEntry(IN PDRIVER_OBJECT DriverObject,
     UNICODE_STRING DeviceName = RTL_CONSTANT_STRING(L"\\Device\\Beep");
     NTSTATUS Status;
 
+    UNREFERENCED_PARAMETER(RegistryPath);
+
     /* Create the device */
     Status = IoCreateDevice(DriverObject,
                             sizeof(DEVICE_EXTENSION),
diff --git a/reactos/drivers/network/afd/afd/info.c b/reactos/drivers/network/afd/afd/info.c
index acba575e6d3..60955240a2d 100644
--- a/reactos/drivers/network/afd/afd/info.c
+++ b/reactos/drivers/network/afd/afd/info.c
@@ -116,7 +116,7 @@ AfdSetInfo( PDEVICE_OBJECT DeviceObject, PIRP Irp,
     _SEH2_TRY {
         switch (InfoReq->InformationClass) {
             case AFD_INFO_BLOCKING_MODE:
-                AFD_DbgPrint(MID_TRACE,("Blocking mode set to %c\n", InfoReq->Information.Boolean));
+                AFD_DbgPrint(MID_TRACE,("Blocking mode set to %u\n", InfoReq->Information.Boolean));
                 FCB->NonBlocking = InfoReq->Information.Boolean;
                 break;
             case AFD_INFO_INLINING_MODE: