diff --git a/nginx_memory b/nginx_memory
index 0e99df9..14f686a 100755
--- a/nginx_memory
+++ b/nginx_memory
@@ -82,15 +82,6 @@ if (exists $ARGV[0] and $ARGV[0] eq "config") {
   exit 0;
 } else {
 
-  ## Get the current OS name.
-  my $osname = $^O;
-
-  if ($osname eq 'freebsd') {   # FreeBSD
-    my $pid_nginx = "pgrep -d ' ' nginx";
-  } else {                      # Linux
-    my $pid_nginx = "pidof nginx";
-  }
-
   my $m = `ps u -p \$(pgrep -d ' ' nginx) | awk 'NR > 1 {nm += \$5} END {print nm*1024}'`;
 
   print "ram.value $m";