diff --git a/config.yaml.example b/config.yaml.example
index e2311be..53557af 100644
--- a/config.yaml.example
+++ b/config.yaml.example
@@ -1,5 +1,8 @@
 # Default configuration for Stop… Camping Time!
 
+# Time resolution in minutes
+#time_resolution: 1
+
 # The default hourly rate
 #hourly_rate: 20.0
 
diff --git a/stoptime.rb b/stoptime.rb
index e8c1444..845e770 100644
--- a/stoptime.rb
+++ b/stoptime.rb
@@ -144,6 +144,7 @@ module StopTime::Models
     DefaultConfig = { "invoice_id"       => "%Y%N",
                       "invoice_template" => "invoice",
                       "hourly_rate"      => 20.0,
+                      "time_resolution"  => 1,
                       "vat_rate"         => 21.0 }
 
     # Creates a new configuration object and loads the configuation.