diff --git a/Utilities/cmliblzma/CMakeLists.txt b/Utilities/cmliblzma/CMakeLists.txt
index c03147fbb..d991438d6 100644
--- a/Utilities/cmliblzma/CMakeLists.txt
+++ b/Utilities/cmliblzma/CMakeLists.txt
@@ -95,6 +95,7 @@ CHECK_TYPE_SIZE("unsigned short" SIZE_OF_UNSIGNED_SHORT)
 CHECK_TYPE_SIZE("unsigned" SIZE_OF_UNSIGNED)
 CHECK_TYPE_SIZE("unsigned long" SIZE_OF_UNSIGNED_LONG)
 CHECK_TYPE_SIZE("unsigned long long" SIZE_OF_UNSIGNED_LONG_LONG)
+CHECK_TYPE_SIZE("size_t" SIZE_OF_SIZE_T)
 
 CHECK_TYPE_SIZE("__int64" __INT64)
 CHECK_TYPE_SIZE("unsigned __int64" UNSIGNED___INT64)
diff --git a/Utilities/cmliblzma/common/sysdefs.h b/Utilities/cmliblzma/common/sysdefs.h
index c84f01c22..a6edea8b0 100644
--- a/Utilities/cmliblzma/common/sysdefs.h
+++ b/Utilities/cmliblzma/common/sysdefs.h
@@ -124,9 +124,9 @@
 
 // The code currently assumes that size_t is either 32-bit or 64-bit.
 #ifndef SIZE_MAX
-#	if SIZEOF_SIZE_T == 4
+#	if SIZE_OF_SIZE_T == 4
 #		define SIZE_MAX UINT32_MAX
-#	elif SIZEOF_SIZE_T == 8
+#	elif SIZE_OF_SIZE_T == 8
 #		define SIZE_MAX UINT64_MAX
 #	else
 #		error size_t is not 32-bit or 64-bit
diff --git a/Utilities/cmliblzma/config.h.in b/Utilities/cmliblzma/config.h.in
index b197f2786..017c435e1 100644
--- a/Utilities/cmliblzma/config.h.in
+++ b/Utilities/cmliblzma/config.h.in
@@ -29,6 +29,7 @@
 @SIZE_OF_UNSIGNED_CODE@
 @SIZE_OF_UNSIGNED_LONG_CODE@
 @SIZE_OF_UNSIGNED_LONG_LONG_CODE@
+@SIZE_OF_SIZE_T_CODE@
 
 /*
  * If we lack int64_t, define it to the first of __int64, int, long, and long long
@@ -277,9 +278,6 @@ typedef uint64_t uintmax_t;
 /* Define to 1 if the system has the type `_Bool'. */
 #cmakedefine HAVE__BOOL 1
 
-/* The size of `size_t', as computed by sizeof. */
-#cmakedefine SIZEOF_SIZE_T @SIZEOF_SIZE_T@
-
 /* Define to 1 if the system supports fast unaligned access to 16-bit and
    32-bit integers. */
 #define TUKLIB_FAST_UNALIGNED_ACCESS 1