diff --git a/scripts/install b/scripts/install
index 53fccf1..5e6a384 100644
--- a/scripts/install
+++ b/scripts/install
@@ -33,6 +33,16 @@ sudo yunohost app checkurl "${domain}" -a "$app" \
     || ynh_die "Path not available: ${domain}"
 
 
+# Check whether Nextcloud or Seafile is installed
+nextcloud_install=$(collaboraonline_app_check_installation "nextcloud")
+seafile_install=$(collaboraonline_app_check_installation "seafile")
+if [[ -n "$nextcloud_install" ]]
+then
+elif [[ -n "$seafile_install" ]]
+else
+    ynh_die "Nextcloud or Seafile is not installed"
+fi
+
 sudo apt-get -yy install apt-transport-https
 sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 0C54D189F4BA284D
 sudo echo 'deb https://collaboraoffice.com/repos/CollaboraOnline/CODE-debian8 ./' | sudo tee -a /etc/apt/sources.list