diff --git a/README.md b/README.md
index 8a549603..36cce9a9 100644
--- a/README.md
+++ b/README.md
@@ -168,6 +168,8 @@ VS.NET
 
 Visual Studio 2017 is required to open and build the solution. The free community version of Visual Studio should suffice.
 
+For the first time you need to execute `Build.cmd` which will generate `GenCommonAssemblyInfo.cs` file required for builds.
+
 NAnt
 ----