diff --git a/src/Console/SupervisorCommand.php b/src/Console/SupervisorCommand.php
index <HASH>..<HASH> 100644
--- a/src/Console/SupervisorCommand.php
+++ b/src/Console/SupervisorCommand.php
@@ -23,7 +23,7 @@ class SupervisorCommand extends Command
                             {--max-processes=1 : The maximum number of total workers to start}
                             {--min-processes=1 : The minimum number of workers to assign per queue}
                             {--memory=128 : The memory limit in megabytes}
-                            {--nice=0 : The process niceness}
+                            {--nice=0 : Increment to the process niceness}
                             {--paused : Start the supervisor in a paused state}
                             {--queue= : The names of the queues to work}
                             {--sleep=3 : Number of seconds to sleep when no job is available}
@@ -75,7 +75,7 @@ class SupervisorCommand extends Command
      */
     protected function start($supervisor)
     {
-        if ($supervisor->options->nice > 0) {
+        if ($supervisor->options->nice) {
             proc_nice($supervisor->options->nice);
         }
 
diff --git a/src/SupervisorOptions.php b/src/SupervisorOptions.php
index <HASH>..<HASH> 100644
--- a/src/SupervisorOptions.php
+++ b/src/SupervisorOptions.php
@@ -49,7 +49,7 @@ class SupervisorOptions extends WorkerOptions
     public $minProcesses = 1;
 
     /**
-     * The process niceness.
+     * Increment to the process niceness.
      *
      * @var int
      */
allow negative nice (for sudo user); better comments about the meaning of nice option