diff --git a/app/src/main/java/io/legado/app/utils/MD5Utils.kt b/app/src/main/java/io/legado/app/utils/MD5Utils.kt
index beaac7530..3cf170cf8 100644
--- a/app/src/main/java/io/legado/app/utils/MD5Utils.kt
+++ b/app/src/main/java/io/legado/app/utils/MD5Utils.kt
@@ -9,16 +9,12 @@ import java.io.InputStream
 @Suppress("unused")
 object MD5Utils {
 
-    private val MD5Digester by lazy {
-        DigestUtil.digester("MD5")
-    }
-
     fun md5Encode(str: String?): String {
-        return MD5Digester.digestHex(str)
+        return DigestUtil.digester("MD5").digestHex(str)
     }
 
     fun md5Encode(inputStream: InputStream): String {
-        return MD5Digester.digestHex(inputStream)
+        return DigestUtil.digester("MD5").digestHex(inputStream)
     }
 
     fun md5Encode16(str: String): String {