diff --git a/rpgregions/src/main/java/net/islandearth/rpgregions/commands/RPGRegionsCommand.java b/rpgregions/src/main/java/net/islandearth/rpgregions/commands/RPGRegionsCommand.java
index 947e220..42cdc0f 100644
--- a/rpgregions/src/main/java/net/islandearth/rpgregions/commands/RPGRegionsCommand.java
+++ b/rpgregions/src/main/java/net/islandearth/rpgregions/commands/RPGRegionsCommand.java
@@ -217,8 +217,9 @@ public class RPGRegionsCommand {
     @CommandDescription("Saves configured regions to the `/plugins/RPGRegions/regions` folder. Also saves user data.")
     @CommandPermission("rpgregions.save")
     @CommandMethod("rpgregions|rpgr save [async]")
-    public void onSave(CommandSender sender, @Argument(value = "async", suggestions = "async") String asyncArg) {
-        boolean async = asyncArg.equals("--async");
+    public void onSave(CommandSender sender,
+                       @Argument(value = "async", suggestions = "async") @Nullable String asyncArg) {
+        boolean async = asyncArg != null && asyncArg.equals("--async");
         sender.sendMessage(ChatColor.GREEN + "Saving data..." + (async ? ChatColor.GOLD + " (async)" : ""));
         long startTime = System.currentTimeMillis();