diff --git a/software/html5as/buildout.hash.cfg b/software/html5as/buildout.hash.cfg
index 2df062b7d3354c4cdf042ba03a3cdeb301e1941a..5b49db60a3c49d971bf9150345f237a383fdf2ca 100644
--- a/software/html5as/buildout.hash.cfg
+++ b/software/html5as/buildout.hash.cfg
@@ -21,7 +21,7 @@ md5sum = 8a1383f7508a911c0c2d81445b5d4250
 
 [instance_html5as]
 _update_hash_filename_ = instance_html5as.cfg.in
-md5sum = beadeb9706ae44e13e6b60699b0da0d1
+md5sum = 7e178ae20bdbf0ed58e6d8fb54226cdb
 
 [template_nginx_conf]
 _update_hash_filename_ = templates/nginx_conf.in
diff --git a/software/html5as/instance_html5as.cfg.in b/software/html5as/instance_html5as.cfg.in
index cedbbdeb58784a3790022a0923dd8f53cf3a805c..3f23a24ff222f59f7024f91450ba1d77fbc6c7f8 100644
--- a/software/html5as/instance_html5as.cfg.in
+++ b/software/html5as/instance_html5as.cfg.in
@@ -10,6 +10,7 @@ parts =
     mime_types
     launcher
     nginx-graceful
+    port-listening-promise
     publish-connection-information
 
 # Define egg directories to be the one from Software Release
@@ -160,6 +161,14 @@ mode = 0700
 context =
     section param_html5as html5as
 
+# Port Listening checking promise
+[port-listening-promise]
+<= monitor-promise-base
+module = check_port_listening
+name = nginx-port-listening.py
+config-hostname = ${html5as:ip}
+config-port = ${html5as:port}
+
 # Publish nginx address
 [publish-connection-information]
 recipe = slapos.cookbook:publish