diff --git a/manifests/server/backup.pp b/manifests/server/backup.pp
index 3b1f1eebe..2c98284a9 100644
--- a/manifests/server/backup.pp
+++ b/manifests/server/backup.pp
@@ -23,7 +23,7 @@
 ) {
 
   if $prescript and $provider =~ /(mysqldump|mysqlbackup)/ {
-    warn("The \$prescript option is not currently implemented for the ${provider} backup provider.")
+    warning("The \$prescript option is not currently implemented for the ${provider} backup provider.")
   }
 
   create_resources('class', {
diff --git a/manifests/server/mysqltuner.pp b/manifests/server/mysqltuner.pp
index 830711067..bc5fcadc0 100644
--- a/manifests/server/mysqltuner.pp
+++ b/manifests/server/mysqltuner.pp
@@ -14,14 +14,35 @@
   }
 
   if $ensure == 'present' {
-    class { 'staging': }
+    # $::puppetversion doesn't exist in puppet 4.x so would break strict
+    # variables
+    if ! $::settings::strict_variables {
+      $_puppetversion = $::puppetversion
+    } else {
+      # defined only works with puppet >= 3.5.0, so don't use it unless we're
+      # actually using strict variables
+      $_puppetversion = defined('$puppetversion') ? {
+        true    => $::puppetversion,
+        default => undef,
+      }
+    }
+    # see https://tickets.puppetlabs.com/browse/ENTERPRISE-258
+    if $_puppetversion and $_puppetversion =~ /Puppet Enterprise/ and versioncmp($_puppetversion, '3.8.0') < 0 {
+      class { 'staging':
+        path => '/opt/mysql_staging',
+      }
+    } else {
+      class { 'staging': }
+    }
+
     staging::file { "mysqltuner-${_version}":
       source => $_source,
     }
     file { '/usr/local/bin/mysqltuner':
-      ensure => $ensure,
-      mode   => '0550',
-      source => "${::staging::path}/mysql/mysqltuner-${_version}",
+      ensure  => $ensure,
+      mode    => '0550',
+      source  => "${::staging::path}/mysql/mysqltuner-${_version}",
+      require => Staging::File["mysqltuner-${_version}"],
     }
   } else {
     file { '/usr/local/bin/mysqltuner':
diff --git a/metadata.json b/metadata.json
index a226e1b1c..a077391fc 100644
--- a/metadata.json
+++ b/metadata.json
@@ -74,7 +74,7 @@
   "requirements": [
     {
       "name": "pe",
-      "version_requirement": ">= 3.7.0 < 2015.3.0"
+      "version_requirement": ">= 3.0.0 < 2015.3.0"
     },
     {
       "name": "puppet",
@@ -84,6 +84,6 @@
   "description": "Mysql module",
   "dependencies": [
     {"name":"puppetlabs/stdlib","version_requirement":">= 3.2.0 < 5.0.0"},
-    {"name":"nanliu/staging","version_requirement":"1.x"}
+    {"name":"nanliu/staging","version_requirement":">= 1.0.1 < 2.0.0"}
   ]
 }