diff --git a/Tools/setup/ubuntu.sh b/Tools/setup/ubuntu.sh
index 6280d96e48..c769c7d5ee 100755
--- a/Tools/setup/ubuntu.sh
+++ b/Tools/setup/ubuntu.sh
@@ -172,13 +172,16 @@ if [[ $INSTALL_SIM == "true" ]]; then
 	echo
 	echo "Installing PX4 simulation dependencies"
 
-	# java (jmavsim or fastrtps)
+	# Java 8 (jmavsim or fastrtps)
 	sudo DEBIAN_FRONTEND=noninteractive apt-get -y --quiet --no-install-recommends install \
 		ant \
 		openjdk-8-jre \
 		openjdk-8-jdk \
 		;
 
+    # Set Java 8 as default
+    sudo update-alternatives --set java $(update-alternatives --list java | grep "java-8")
+
 	# Gazebo
 	sudo sh -c 'echo "deb http://packages.osrfoundation.org/gazebo/ubuntu-stable `lsb_release -cs` main" > /etc/apt/sources.list.d/gazebo-stable.list'
 	wget http://packages.osrfoundation.org/gazebo.key -O - | sudo apt-key add -