diff --git a/README.md b/README.md
index 8ca5b100..fdc4c191 100644
--- a/README.md
+++ b/README.md
@@ -1253,6 +1253,16 @@ Default: `1`
 
     let g:ycm_auto_stop_csharp_server = 1
 
+### The `g:ycm_csharp_server_port` option
+
+When g:ycm_auto_start_csharp_server is set to `1`, specifies the port for 
+the OmniSharp server to listen on. When set to `0` uses an unused port provided
+by the OS.
+
+Default: `0`
+
+    let g:ycm_csharp_server_port = 0
+
 ### The `g:ycm_add_preview_to_completeopt` option
 
 When this option is set to `1`, YCM will add the `preview` string to Vim's
diff --git a/doc/youcompleteme.txt b/doc/youcompleteme.txt
index 2bd0737e..fa046203 100644
--- a/doc/youcompleteme.txt
+++ b/doc/youcompleteme.txt
@@ -1460,6 +1460,17 @@ closing Vim.
 Default: '1'
 >
   let g:ycm_auto_stop_csharp_server = 1
+
+-------------------------------------------------------------------------------
+The *g:ycm_csharp_server_port* option
+
+When g:ycm_auto_start_csharp_server is set to '1', specifies the port for 
+the OmniSharp server to listen on. When set to '0' uses an unused port provided
+by the OS.
+
+Default: '0'
+>
+  let g:ycm_csharp_server_port = 0
 <
 -------------------------------------------------------------------------------
 The *g:ycm_add_preview_to_completeopt* option