diff --git a/build_system.sh b/build_system.sh
index 11ccac85..bc7fd395 100755
--- a/build_system.sh
+++ b/build_system.sh
@@ -68,7 +68,7 @@ sudo tar -xf $BUILD_DIR/filesystem.tar > /dev/null
 # Add hostname and hosts. This cannot be done in the docker container...
 echo "Setting network stuff"
 HOST=tici
-sudo bash -c "ln -s /proc/sys/kernel/hostname etc/hostname"
+sudo bash -c "ln -sf /proc/sys/kernel/hostname etc/hostname"
 sudo bash -c "echo \"127.0.0.1    localhost.localdomain localhost\" > etc/hosts"
 sudo bash -c "echo \"127.0.0.1    $HOST\" >> etc/hosts"