diff --git a/openvidu-server/docker/openvidu-recording/ubuntu-16-04.Dockerfile b/openvidu-server/docker/openvidu-recording/ubuntu-16-04.Dockerfile
index 830766fc..6326a429 100644
--- a/openvidu-server/docker/openvidu-recording/ubuntu-16-04.Dockerfile
+++ b/openvidu-server/docker/openvidu-recording/ubuntu-16-04.Dockerfile
@@ -19,7 +19,7 @@ RUN apt-get install -y ffmpeg pulseaudio xvfb
 # Install jq for managing JSON
 RUN apt-get install -y jq
 
-RUN apt-get install x11vnc
+RUN apt-get install -y x11vnc
 
 
 # Clean