diff --git a/src/main/java/org/redkale/boot/PropertiesAgent.java b/src/main/java/org/redkale/boot/PropertiesAgent.java
index c937d2cf6..e50e63d37 100644
--- a/src/main/java/org/redkale/boot/PropertiesAgent.java
+++ b/src/main/java/org/redkale/boot/PropertiesAgent.java
@@ -18,8 +18,6 @@ import org.redkale.util.*;
  */
 public abstract class PropertiesAgent {
 
-    public static final String PROP_KEY_NAMESPACE = "namespace";
-
     protected final Logger logger = Logger.getLogger(this.getClass().getSimpleName());
 
     /**