diff --git a/src/nvim/lua/base64.c b/src/nvim/lua/base64.c
index 3f246839d5..b6382f6eab 100644
--- a/src/nvim/lua/base64.c
+++ b/src/nvim/lua/base64.c
@@ -1,3 +1,6 @@
+// This is an open source non-commercial project. Dear PVS-Studio, please check
+// it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+
 #include <assert.h>
 #include <lauxlib.h>
 #include <lua.h>