diff --git a/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/support/AbstractRegistry.java b/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/support/AbstractRegistry.java
index bc119d0f604..9230951816b 100644
--- a/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/support/AbstractRegistry.java
+++ b/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/support/AbstractRegistry.java
@@ -25,7 +25,6 @@
 import org.apache.dubbo.common.utils.ConfigUtils;
 import org.apache.dubbo.common.utils.NamedThreadFactory;
 import org.apache.dubbo.common.utils.UrlUtils;
-import org.apache.dubbo.common.utils.CollectionUtils;
 import org.apache.dubbo.registry.NotifyListener;
 import org.apache.dubbo.registry.Registry;