diff --git a/mimetype_test.go b/mimetype_test.go
index 39d6c432..cb303c46 100644
--- a/mimetype_test.go
+++ b/mimetype_test.go
@@ -184,10 +184,9 @@ var files = map[string]string{
 	"tar.oldgnu.tar":     "application/x-tar",
 	"tar.posix.tar":      "application/x-tar",
 	// tar.star.tar was generated with star 1.6.
-	"tar.star.tar":     "application/x-tar",
-	"tar.ustar.tar":    "application/x-tar",
-	"tar.v7.tar":       "application/x-tar",
-	"tar.issue464.tar": "application/x-tar",
+	"tar.star.tar":  "application/x-tar",
+	"tar.ustar.tar": "application/x-tar",
+	"tar.v7.tar":    "application/x-tar",
 	// tar.v7-gnu.tar is a v7 tar archive generated with GNU tar 1.29.
 	"tar.v7-gnu.tar":  "application/x-tar",
 	"tcl.tcl":         "text/x-tcl",
diff --git a/testdata/tar.issue464.tar b/testdata/tar.issue464.tar
deleted file mode 100644
index 6fc9f433..00000000
Binary files a/testdata/tar.issue464.tar and /dev/null differ