diff --git a/app/src/main/cpp/archive.c b/app/src/main/cpp/archive.c
index 714738554..33d3f0d66 100644
--- a/app/src/main/cpp/archive.c
+++ b/app/src/main/cpp/archive.c
@@ -178,6 +178,7 @@ JNIEXPORT void JNICALL
 Java_com_hippo_UriArchiveAccessor_closeArchive(JNIEnv *jniEnv, jobject thiz) {
     archive_release();
     free(passwd);
+    passwd = NULL;
     munmap(archiveAddr, archiveSize);
 }