diff --git a/build.gradle b/build.gradle
index 8234cf0..9678c45 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ plugins {
 }
 
 group 'zone.rong'
-version '2.0'
+version '2.1'
 
 java {
     withSourcesJar()
diff --git a/src/main/java/zone/rong/imaginebreaker/ImagineBreaker.java b/src/main/java/zone/rong/imaginebreaker/ImagineBreaker.java
index a5441f0..bd388c8 100644
--- a/src/main/java/zone/rong/imaginebreaker/ImagineBreaker.java
+++ b/src/main/java/zone/rong/imaginebreaker/ImagineBreaker.java
@@ -11,6 +11,7 @@
 import java.lang.reflect.Field;
 import java.util.AbstractMap;
 import java.util.Collections;
+import java.util.HashMap;
 import java.util.Map;
 import java.util.Set;
 
@@ -165,7 +166,7 @@ public static void wipeFieldFilters() {
                 CLASS$REFLECTION_DATA.setVolatile(clazz, null);
             }
         }
-        REFLECTION$FIELD_FILTER_MAP.setVolatile((Object) null);
+        REFLECTION$FIELD_FILTER_MAP.setVolatile(new HashMap<>());
     }
 
     /**
@@ -181,7 +182,7 @@ public static void wipeMethodFilters() {
                 CLASS$REFLECTION_DATA.setVolatile(clazz, null);
             }
         }
-        REFLECTION$METHOD_FILTER_MAP.setVolatile((Object) null);
+        REFLECTION$METHOD_FILTER_MAP.setVolatile(new HashMap<>());
     }
 
     private static boolean isOpenJ9() {