diff --git a/lib/liblzma/config.h b/lib/liblzma/config.h
index e7b61bb95f98..61542b931842 100644
--- a/lib/liblzma/config.h
+++ b/lib/liblzma/config.h
@@ -66,7 +66,6 @@
 #define SIZEOF_SIZE_T 8
 #define STDC_HEADERS 1
 #define TUKLIB_CPUCORES_SYSCONF 1
-#define TUKLIB_FAST_UNALIGNED_ACCESS 1
 #define TUKLIB_PHYSMEM_SYSCONF 1
 #ifndef _ALL_SOURCE
 # define _ALL_SOURCE 1