diff --git a/spark-common/src/main/java/me/lucko/spark/common/SparkPlatform.java b/spark-common/src/main/java/me/lucko/spark/common/SparkPlatform.java
index 5e25d915..f5886b59 100644
--- a/spark-common/src/main/java/me/lucko/spark/common/SparkPlatform.java
+++ b/spark-common/src/main/java/me/lucko/spark/common/SparkPlatform.java
@@ -372,6 +372,10 @@ public CompletableFuture<Void> executeCommand(CommandSender sender, String[] arg
             int warningIntervalSeconds = 5;
 
             try {
+                if (completed.get()) {
+                    return;
+                }
+                
                 for (int i = 1; i <= 3; i++) {
                     try {
                         Thread.sleep(warningIntervalSeconds * 1000);