Nginx adding limit_req_zone question

hello
i am trying to add this
Module ngx_http_limit_req_module
i have added
"limit_req_zone $binary_remote_addr zone=one:10m rate=1r/s;"
in /usr/local/nginx/conf/nginx.conf
but when i restart nginx i keep getting error
nginx: [emerg] invalid number of arguments in "limit_req_zone" directive in /usr/local/nginx/conf/nginx.conf:27

what am i doing wrong??

 

Code:

user  nginx nginx;
worker_processes 1;
worker_priority -10;

worker_rlimit_nofile 260000;
timer_resolution 100ms;

error_log  logs/error.log;

pid  logs/nginx.pid;
pcre_jit on;

events {
  worker_connections  2048;
  accept_mutex on;
  accept_mutex_delay 100ms;
  use epoll;
}

http {
include /usr/local/nginx/conf/pagespeedadmin.conf;
include /usr/local/nginx/conf/fastcgi_param_https_map.conf;
limit_req_zone $binary_remote_addr zone=one:10m rate =1r/s;



log_format  main  '$remote_addr - $remote_user [$time_local] $request '
  '"$status" $body_bytes_sent "$http_referer" '
  '"$http_user_agent" "$http_x_forwarded_for" "$gzip_ratio"'
  ' "$connection" "$connection_requests" "$request_time"';

access_log logs/access.log combined buffer=32k;

  index  index.php index.html index.htm;
  include  mime.types;
  default_type  application/octet-stream;
  charset utf-8;

  sendfile on;
  #sendfile_max_chunk 1m;
  tcp_nopush  on;
  tcp_nodelay off;
  server_tokens off;
  server_name_in_redirect off;
   
  keepalive_timeout  10;
  keepalive_requests 100;
  lingering_time 20s;
  lingering_timeout 5s;
  keepalive_disable msie6;

   gzip on;
   gzip_vary  on;
   gzip_disable "MSIE [1-6]\.";
  gzip_static on;
  gzip_min_length  1400;
  gzip_buffers  32 8k;
  gzip_http_version 1.0;
  gzip_comp_level 5;
  gzip_proxied  any;
  gzip_types text/plain text/css text/xml application/javascript application/x-javascript application/xml application/xml+rss application/ecmascript application/json image/svg+xml;

 client_body_buffer_size 256k;
 client_body_in_file_only off;
 client_body_timeout 60s;
 client_header_buffer_size 64k;
## how long a connection has to complete sending
## it's headers for request to be processed
 client_header_timeout  20s;
 client_max_body_size 10m;
 connection_pool_size  512;
 directio  4m;
 ignore_invalid_headers on;   
 large_client_header_buffers 8 64k;
 output_buffers  8 256k;
 postpone_output  1460;
 proxy_temp_path  /tmp/nginx_proxy/;
 request_pool_size  32k;
 reset_timedout_connection on;
 send_timeout  60s;
 types_hash_max_size 2048;
 server_names_hash_bucket_size 64;

# for nginx proxy backends to prevent redirects to backend port
# port_in_redirect off;

open_file_cache max=10000 inactive=30s;
open_file_cache_valid 120s;
open_file_cache_min_uses 2;
open_file_cache_errors off;
open_log_file_cache max=4096 inactive=30s min_uses=2;

## limit number of concurrency connections per ip to 16
## add to your server {} section the next line
## limit_conn limit_per_ip 16;
## uncomment below line allows 500K sessions
# limit_conn_log_level error;
#######################################
# use limit_zone for Nginx <v1.1.7 and lower
# limit_zone $binary_remote_addr zone=limit_per_ip:16m;
#######################################
# use limit_conn_zone for Nginx >v1.1.8 and higher
 limit_conn_zone $binary_remote_addr zone=limit_per_ip:16m;
#######################################

 include /usr/local/nginx/conf/conf.d/*.conf;
}