diff --git a/src/main/java/org/nustaq/offheap/structs/unsafeimpl/FSTStructFactory.java b/src/main/java/org/nustaq/offheap/structs/unsafeimpl/FSTStructFactory.java
index 07732535..41980e32 100644
--- a/src/main/java/org/nustaq/offheap/structs/unsafeimpl/FSTStructFactory.java
+++ b/src/main/java/org/nustaq/offheap/structs/unsafeimpl/FSTStructFactory.java
@@ -33,14 +33,11 @@
 import javassist.expr.FieldAccess;
 
 import java.io.ByteArrayInputStream;
-import java.io.File;
 import java.io.IOException;
 import java.lang.reflect.*;
 import java.util.ArrayList;
 import java.util.HashMap;
-import java.util.List;
 import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.atomic.AtomicBoolean;
 
 /**
  * manages + generates struct instrumented classes