diff --git a/guacamole-ext/src/main/java/net/sourceforge/guacamole/net/auth/Connection.java b/guacamole-ext/src/main/java/net/sourceforge/guacamole/net/auth/Connection.java
index de26f2d94..775fa0622 100644
--- a/guacamole-ext/src/main/java/net/sourceforge/guacamole/net/auth/Connection.java
+++ b/guacamole-ext/src/main/java/net/sourceforge/guacamole/net/auth/Connection.java
@@ -114,6 +114,6 @@ public interface Connection {
      *                            of this connection, or if permission is
      *                            denied.
      */
-    public List<ConnectionRecord> getHistory() throws GuacamoleException;
+    public List<? extends ConnectionRecord> getHistory() throws GuacamoleException;
             
 }