diff --git a/doc/build-unix.md b/doc/build-unix.md
index f7ae3bfacfcb7..52358b4595ea0 100644
--- a/doc/build-unix.md
+++ b/doc/build-unix.md
@@ -76,11 +76,11 @@ Now, you can either build from self-compiled [depends](/depends/README.md) or in
 
 BerkeleyDB is required for the wallet.
 
- **For Ubuntu only:** db4.8 packages are available [here](https://launchpad.net/~pivx/+archive/pivx).
+ **For Ubuntu only:** db4.8 packages are available [here](https://launchpad.net/~pivx/+archive/berkeley-db4).
  You can add the repository using the following command:
 
     sudo apt-get install software-properties-common
-    sudo add-apt-repository ppa:pivx/pivx
+    sudo add-apt-repository ppa:pivx/berkeley-db4
     sudo apt-get update
     sudo apt-get install libdb4.8-dev libdb4.8++-dev