diff --git a/src/main/java/net/knarcraft/paidsigns/command/TokenizedCommand.java b/src/main/java/net/knarcraft/paidsigns/command/TokenizedCommand.java
index bbd6802..a9f1146 100644
--- a/src/main/java/net/knarcraft/paidsigns/command/TokenizedCommand.java
+++ b/src/main/java/net/knarcraft/paidsigns/command/TokenizedCommand.java
@@ -19,7 +19,11 @@ public class TokenizedCommand implements CommandExecutor {
     @Override
     public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
         arguments = Tokenizer.tokenize(String.join(" ", args));
-        argumentSize = args[args.length - 1].isEmpty() ? arguments.size() : arguments.size() - 1;
+        if (args.length == 0) {
+            argumentSize = 0;
+        } else {
+            argumentSize = args[args.length - 1].isEmpty() ? arguments.size() : arguments.size() - 1;
+        }
         return true;
     }
 
diff --git a/src/main/java/net/knarcraft/paidsigns/command/TokenizedTabCompleter.java b/src/main/java/net/knarcraft/paidsigns/command/TokenizedTabCompleter.java
index 2d78bc0..d5b6b0a 100644
--- a/src/main/java/net/knarcraft/paidsigns/command/TokenizedTabCompleter.java
+++ b/src/main/java/net/knarcraft/paidsigns/command/TokenizedTabCompleter.java
@@ -21,7 +21,11 @@ public class TokenizedTabCompleter implements TabCompleter {
     @Override
     public List<String> onTabComplete(@NotNull CommandSender sender, @NotNull Command command, @NotNull String alias, @NotNull String[] args) {
         arguments = Tokenizer.tokenize(String.join(" ", args));
-        argumentSize = args[args.length - 1].isEmpty() ? arguments.size() : arguments.size() - 1;
+        if (args.length == 0) {
+            argumentSize = 0;
+        } else {
+            argumentSize = args[args.length - 1].isEmpty() ? arguments.size() : arguments.size() - 1;
+        }
         return null;
     }