diff --git a/doc.go b/doc.go
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+++ b/doc.go
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+// Package water is a simple TUN/TAP library. It efficiently works with standard packages like io, bufio, etc..
+package water
diff --git a/waterutil/doc.go b/waterutil/doc.go
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+++ b/waterutil/doc.go
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+// Package waterutil provides utility functions for interpreting MAC farme headers and IP packet headers. It defines some constants such as protocol numbers and ethernet frame types. Use waterutil along with package water to work with TUN/TAP interface data.
+package waterutil