diff --git a/lib/playerPlugins/commands.js b/lib/playerPlugins/commands.js
index 13f9a5e..f5c879c 100644
--- a/lib/playerPlugins/commands.js
+++ b/lib/playerPlugins/commands.js
@@ -28,7 +28,7 @@ function inject(serv, player, options) {
       }
     }
     else if (results = command.match(/^kick/)) {
-      results = command.match(/^kick ([a-zA-Z0-9]+)(?: (.*))?/);
+      results = command.match(/^kick ([a-zA-Z0-9_]+)(?: (.*))?/);
       if (!results) {
         player.chat("Usage: /kick <player> [reason]");
       }
@@ -46,7 +46,7 @@ function inject(serv, player, options) {
       }
     }
     else if (results = command.match(/^ban/)) {
-      results = command.match(/^ban ([a-zA-Z0-9]+)(?: (.*))?/);
+      results = command.match(/^ban ([a-zA-Z0-9_]+)(?: (.*))?/);
       if (!results) {
         player.chat("Usage: /ban <player> [reason]");
       }
@@ -72,7 +72,7 @@ function inject(serv, player, options) {
       }
     }
     else if (results = command.match(/^pardon/)) {
-      results = command.match(/^pardon ([a-zA-Z0-9]+)/);
+      results = command.match(/^pardon ([a-zA-Z0-9_]+)/);
       if (!results) {
         player.chat("Usage: /pardon <player>");
       }