diff --git a/src/xz/file_io.c b/src/xz/file_io.c
index 6b1a1536..6f784dd6 100644
--- a/src/xz/file_io.c
+++ b/src/xz/file_io.c
@@ -493,8 +493,9 @@ io_sync_dest(file_pair *pair)
 		return true;
 	}
 
-#if !defined(TUKLIB_DOSLIKE) && !defined(_AIX)
+#if !defined(TUKLIB_DOSLIKE) && !defined(_AIX) && !defined(__QNX__)
 	// On AIX, this would fail with EBADF.
+        // On QNX, this would fail with EINVAL.
 	if (fsync(pair->dir_fd)) {
 		message_error(_("%s: Synchronizing the directory of "
 				"the file failed: %s"),