diff --git a/dubbo-configcenter/dubbo-configcenter-file/src/main/java/org/apache/dubbo/common/config/configcenter/file/FileSystemDynamicConfiguration.java b/dubbo-configcenter/dubbo-configcenter-file/src/main/java/org/apache/dubbo/common/config/configcenter/file/FileSystemDynamicConfiguration.java
index 3fc059b6ff..575f677ca6 100644
--- a/dubbo-configcenter/dubbo-configcenter-file/src/main/java/org/apache/dubbo/common/config/configcenter/file/FileSystemDynamicConfiguration.java
+++ b/dubbo-configcenter/dubbo-configcenter-file/src/main/java/org/apache/dubbo/common/config/configcenter/file/FileSystemDynamicConfiguration.java
@@ -553,7 +553,7 @@ public class FileSystemDynamicConfiguration extends TreePathDynamicConfiguration
     }
 
     protected ThreadPoolExecutor getWorkersThreadPool() {
-        return super.getWorkersThreadPool();
+        return (ThreadPoolExecutor) super.getWorkersThreadPool();
     }
 
     private <V> V executeMutually(final Object mutex, Callable<V> callable) {