diff --git a/app/src/main/java/com/gh/gamecenter/ImageViewerActivity.kt b/app/src/main/java/com/gh/gamecenter/ImageViewerActivity.kt
index 51155286fa..fd2bff8381 100644
--- a/app/src/main/java/com/gh/gamecenter/ImageViewerActivity.kt
+++ b/app/src/main/java/com/gh/gamecenter/ImageViewerActivity.kt
@@ -625,7 +625,7 @@ class ImageViewerActivity : BaseActivity(), OnPageChangeListener {
             var out: OutputStream? = null
             try {
                 val fileName: String = if (mShowBase64Image) {
-                    MD5Utils.getUrlMD5(curUrl!!.substring(0, 50)) + ".png"
+                    MD5Utils.getContentMD5(System.currentTimeMillis().toString()) + ".png"
                 } else {
                     curUrl!!.substring(curUrl.lastIndexOf("/"))
                 }