diff --git a/manifests/server.pp b/manifests/server.pp
index 57a1718..202d4d7 100644
--- a/manifests/server.pp
+++ b/manifests/server.pp
@@ -73,11 +73,17 @@
     ensure => $package_ensure,
   }
 
-  $wsrep_provider_options = wsrep_options({
-    'socket.ssl'      => $wsrep_ssl,
-    'socket.ssl_key'  => $wsrep_ssl_key,
-    'socket.ssl_cert' => $wsrep_ssl_cert,
-  })
+  if $wsrep_ssl {
+    $wsrep_provider_options = wsrep_options({
+      'socket.ssl'      => $wsrep_ssl,
+      'socket.ssl_key'  => $wsrep_ssl_key,
+      'socket.ssl_cert' => $wsrep_ssl_cert,
+    })
+  } else {
+    $wsrep_provider_options = wsrep_options({
+      'socket.ssl'      => $wsrep_ssl,
+    })
+  }
 
   $wsrep_debug = bool2num($debug)