diff --git a/lib/liblzma/config.h b/lib/liblzma/config.h
index 0af23f26dd7e..374762c4208e 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_SYSCTL 1
-#define TUKLIB_FAST_UNALIGNED_ACCESS 1
 #define TUKLIB_PHYSMEM_SYSCONF 1
 #ifndef _ALL_SOURCE
 # define _ALL_SOURCE 1