diff --git a/logback-core/src/main/java/ch/qos/logback/core/net/HardenedObjectInputStream.java b/logback-core/src/main/java/ch/qos/logback/core/net/HardenedObjectInputStream.java
index 326a179408..1b630b804b 100755
--- a/logback-core/src/main/java/ch/qos/logback/core/net/HardenedObjectInputStream.java
+++ b/logback-core/src/main/java/ch/qos/logback/core/net/HardenedObjectInputStream.java
@@ -18,7 +18,6 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InvalidClassException;
-import java.io.ObjectInputFilter;
 import java.io.ObjectInputStream;
 import java.io.ObjectStreamClass;
 import java.lang.reflect.InvocationTargetException;