diff --git a/archival/rpm2cpio.c b/archival/rpm2cpio.c
index b23d5afa9..5bc50b88f 100644
--- a/archival/rpm2cpio.c
+++ b/archival/rpm2cpio.c
@@ -87,8 +87,6 @@ int rpm2cpio_main(int argc UNUSED_PARAM, char **argv)
 		if (ENABLE_FEATURE_SEAMLESS_XZ
 		 && magic.b16[0] == XZ_MAGIC1
 		) {
-			/* .xz signature: 0xfd, '7', 'z', 'X', 'Z', 0x00 */
-			/* More info at: http://tukaani.org/xz/xz-file-format.txt */
 			xread(rpm_fd, magic.b32, sizeof(magic.b32[0]));
 			if (magic.b32[0] != XZ_MAGIC2)
 				goto no_magic;
diff --git a/include/unarchive.h b/include/unarchive.h
index 3b8e1575a..b55af6d9d 100644
--- a/include/unarchive.h
+++ b/include/unarchive.h
@@ -9,6 +9,8 @@ enum {
 	COMPRESS_MAGIC = 0x1f9d,
 	GZIP_MAGIC  = 0x1f8b,
 	BZIP2_MAGIC = 'B' * 256 + 'Z',
+	/* .xz signature: 0xfd, '7', 'z', 'X', 'Z', 0x00 */
+	/* More info at: http://tukaani.org/xz/xz-file-format.txt */
 	XZ_MAGIC1   = 0xfd * 256 + '7',
 	XZ_MAGIC2   = (('z' * 256 + 'X') * 256 + 'Z') * 256 + 0,
 	/* Different form: 32 bits, then 16 bits: */
diff --git a/libbb/read_printf.c b/libbb/read_printf.c
index 6780b94ef..1b215f97a 100644
--- a/libbb/read_printf.c
+++ b/libbb/read_printf.c
@@ -289,8 +289,6 @@ void FAST_FUNC setup_unzip_on_fd(int fd /*, int fail_if_not_detected*/)
 	if (ENABLE_FEATURE_SEAMLESS_XZ
 	 && magic.b16[0] == XZ_MAGIC1
 	) {
-		/* .xz signature: 0xfd, '7', 'z', 'X', 'Z', 0x00 */
-		/* More info at: http://tukaani.org/xz/xz-file-format.txt */
 		offset = -6;
 		xread(fd, magic.b32, sizeof(magic.b32[0]));
 		if (magic.b32[0] == XZ_MAGIC2) {