diff --git a/src/console/ptyc_console_reader.c b/src/console/ptyc_console_reader.c
index 76b8ce6..984dac7 100644
--- a/src/console/ptyc_console_reader.c
+++ b/src/console/ptyc_console_reader.c
@@ -216,9 +216,8 @@ int __stdcall ptyc_console_reader(struct ptyc_driver_ctx_impl * ictx)
 		for (; nbytes; ) {
 			status = ntapi->pty_write(
 				ictx->cctx.hptm,
-				hwait,0,0,
-				&iosb,
-				ch,nbytes,
+				hwait,0,0,&iosb,
+				ch,(uint32_t)nbytes,
 				0,0);
 
 			if (status == NT_STATUS_PENDING)