diff --git a/tests/files/README b/tests/files/README
index 7c7f4e18..4f963627 100644
--- a/tests/files/README
+++ b/tests/files/README
@@ -126,6 +126,12 @@
     bad-0-empty-truncated.lzma is good-0-empty.lzma without the last byte
     of the file.
 
+    bad-0-header_magic.lzma is good-0-empty.lzma but with one byte wrong
+    in the Header Magic Bytes field.
+
+    bad-0-footer_magic.lzma is good-0-empty.lzma but with one byte wrong
+    in the Footer Magic Bytes field.
+
     bad-0-nonempty_index.lzma has no Blocks but Index claims that there is
     one Block.
 
diff --git a/tests/files/bad-0-footer_magic.lzma b/tests/files/bad-0-footer_magic.lzma
new file mode 100644
index 00000000..5d9e3894
Binary files /dev/null and b/tests/files/bad-0-footer_magic.lzma differ
diff --git a/tests/files/bad-0-header_magic.lzma b/tests/files/bad-0-header_magic.lzma
new file mode 100644
index 00000000..5984a453
Binary files /dev/null and b/tests/files/bad-0-header_magic.lzma differ