diff --git a/threadpool/core/src/main/java/cn/hippo4j/core/enable/BeforeCheckConfiguration.java b/threadpool/core/src/main/java/cn/hippo4j/core/enable/BeforeCheckConfiguration.java
index a5a0265d..20c2df30 100644
--- a/threadpool/core/src/main/java/cn/hippo4j/core/enable/BeforeCheckConfiguration.java
+++ b/threadpool/core/src/main/java/cn/hippo4j/core/enable/BeforeCheckConfiguration.java
@@ -153,7 +153,7 @@ public class BeforeCheckConfiguration {
                                     "Web server maybe fail to start. The dynamic thread pool polaris namespace is empty.",
                                     "Please check whether the [spring.dynamic.thread-pool.polaris.namespace] configuration is empty or an empty string.");
                         }
-                        if (!(polaris.get("file") instanceof  Map)) {
+                        if (!(polaris.get("file") instanceof Map)) {
                             throw new ConfigEmptyException(
                                     "Web server maybe fail to start. Lack of the dynamic thread pool polaris file configuration.",
                                     "Please check whether the [spring.dynamic.thread-pool.polaris.file.*] configuration is complete.");