diff --git a/manifests/init.pp b/manifests/init.pp
index a6970b28b..bc6a45181 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -46,7 +46,7 @@
   $concurrent_counter_writes                            = 32,
   $concurrent_reads                                     = 32,
   $concurrent_writes                                    = 32,
-  $config_file_mode                                     = '0666',
+  $config_file_mode                                     = '0644',
   $config_path                                          = undef,
   $counter_cache_save_period                            = 7200,
   $counter_write_request_timeout_in_ms                  = 5000,
diff --git a/spec/classes/cassandra_spec.rb b/spec/classes/cassandra_spec.rb
index 40b923797..36106eeb7 100644
--- a/spec/classes/cassandra_spec.rb
+++ b/spec/classes/cassandra_spec.rb
@@ -59,7 +59,7 @@
         'concurrent_counter_writes' => 32,
         'concurrent_reads' => 32,
         'concurrent_writes' => 32,
-        'config_file_mode' => '0666',
+        'config_file_mode' => '0644',
         'config_path' => nil,
         'counter_cache_save_period' => 7200,
         'counter_cache_size_in_mb' => '',