diff --git a/README.md b/README.md
index 6715a593..a57e0205 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,9 @@ You also need Maven 3.x (and a Java 1.7+ JDK) installed in order to build the ap
 To install maven and openjdk on Ubuntu, issue the following commands
 
     sudo apt-get install build-essential openjdk-7-jdk maven
+    # Make sure java7 is the selected java version
+    sudo update-alternatives --config java
+    sudo update-alternatives --config javac
     
     
 On Windows and other operating systems, just download maven 3.x from the [official site](http://maven.apache.org/), extract it somewhere and add the `bin` directory to your `PATH` environment variable.