diff --git a/README.md b/README.md
index cc9a578e3..65b6301ea 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ $ sudo unzip protoc-3.1.0-linux-x86_64.zip -d /usr/local
 With the required dependencies installed, the `Makefile` target named **binaries** will compile the `ctr` and `containerd` binaries and place them in the `bin/` directory. Using `sudo make install` will place the binaries in `/usr/local/bin`. When making any changes to the gRPC API, `make generate` will use the installed `protoc` compiler to regenerate the API generated code packages.
 
 > *Note*: A build tag is currently available to disable building the btrfs snapshot driver.
-> Adding `BUILDTAGS=containerd_no_btrfs` to your environment before calling the **binaries**
+> Adding `BUILDTAGS=no_btrfs` to your environment before calling the **binaries**
 > Makefile target will disable the btrfs driver within the containerd Go build.
 
 Vendoring of external imports uses the [`vndr` tool](https://github.com/LK4D4/vndr) which uses a simple config file, `vendor.conf`, to provide the URL and version or hash details for each vendored import. After modifying `vendor.conf` run the `vndr` tool to update the `vendor/` directory contents. Combining the `vendor.conf` update with the changeset in `vendor/` after running `vndr` should become a single commit for a PR which relies on vendored updates.
diff --git a/cmd/containerd/builtins_btrfs_linux.go b/cmd/containerd/builtins_btrfs_linux.go
index f5aa91787..7a8e54085 100644
--- a/cmd/containerd/builtins_btrfs_linux.go
+++ b/cmd/containerd/builtins_btrfs_linux.go
@@ -1,4 +1,4 @@
-// +build !containerd_no_btrfs
+// +build !no_btrfs
 
 package main