diff --git a/mavenmcserver/src/main/java/mavenmcserver/command/CommandTicTacToe.java b/mavenmcserver/src/main/java/mavenmcserver/command/CommandTicTacToe.java
index 32b832a..fb6a4a2 100644
--- a/mavenmcserver/src/main/java/mavenmcserver/command/CommandTicTacToe.java
+++ b/mavenmcserver/src/main/java/mavenmcserver/command/CommandTicTacToe.java
@@ -63,7 +63,7 @@ public boolean onCommand(CommandSender sender, Command command, String label, St
 				sender.sendMessage(ChatColor.RED + e.getMessage() + ChatColor.RESET);
 				return true;
 			} catch(NumberFormatException e) {
-				String nonNumberString = e.getMessage().substring(19, e.getMessage().length() - 2);
+				String nonNumberString = e.getMessage().substring(19, e.getMessage().length() - 1);
 				sender.sendMessage(ChatColor.RED + "Error: expected number at '" + nonNumberString + "'" + ChatColor.RESET);
 				return true;
 			}