diff --git a/bin/installappsso b/bin/installapp-sso
old mode 100755
new mode 100644
similarity index 57%
rename from bin/installappsso
rename to bin/installapp-sso
index 6a18870..eded594
--- a/bin/installappsso
+++ b/bin/installapp-sso
@@ -1,16 +1,16 @@
 #!/bin/bash -x
 #
-# Installs configuration for SSO on specified application
+# Installs SSO on app
 . /etc/federated
 . /federated/lib/functions.sh
 trap cleanup `seq 1 15`
 
 usage() {
 cat << EOF
-Install application SSO configuration
+Install application
 Usage: $0 appname
 Arguments:
-    appname         Application SSO config to install. nextcloud,bookstack,matrix,etc
+    appname         Application to install SSO. bookstack,espocrm,freescout,etc
 
 EOF
 exit 2;
@@ -20,5 +20,6 @@ exit 2;
 APP=$1
 
 [ ! -f /federated/lib/$APP.sh ] && failcheck "/federated/lib/$APP.sh doesn't exist."
+[ ! -d /federated/apps/$APP ] && failcheck "/federated/apps/$APP doesn't exist. Is $APP is installed?"
 . /federated/lib/$APP.sh
 configsso_$APP