diff --git a/bluecommands-core/src/main/java/de/bluecolored/bluecommands/Command.java b/bluecommands-core/src/main/java/de/bluecolored/bluecommands/Command.java
index 24f8f61..4134849 100644
--- a/bluecommands-core/src/main/java/de/bluecolored/bluecommands/Command.java
+++ b/bluecommands-core/src/main/java/de/bluecolored/bluecommands/Command.java
@@ -86,7 +86,7 @@ void parse(ParseData<C, T> data) {
                 }
             }
         } else if (!subCommands.isEmpty()) {
-            if (isTreeOptional()) {
+            if (isSubTreeOptional()) {
                 gatherAllExecutables(data.getContext(), executable -> {
                     data.getResult().addMatch(new ParseMatch<>(executable, data.getContext(), data.getArguments(), data.getCommandStack()));
                 });
@@ -108,6 +108,12 @@ private void gatherAllExecutables(C context, Consumer<CommandExecutable<C, T>> c
             subCommand.gatherAllExecutables(context, consumer);
     }
 
+    private boolean isSubTreeOptional() {
+        for (Command<C, T> subCommand : subCommands)
+            if (!subCommand.isTreeOptional()) return false;
+        return true;
+    }
+
     private boolean isTreeOptional() {
         long now = System.currentTimeMillis();
         if (lastTreeOptionalTime < now - 1000) {