diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 258dd39..ba5a39d 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -228,7 +228,7 @@ union semun {
 
 #if (BYTE_ORDER == LITTLE_ENDIAN) == (BYTE_ORDER == BIG_ENDIAN)
 # error "Unknown or unsupported endianness (BYTE_ORDER)"
-#elif (-6 & 5) || CHAR_BIT != 8 || UINT_MAX < 0xffffffff || ULONG_MAX % 0xFFFF
+#elif (-6 & 5) || CHAR_BIT!=8 || UINT_MAX!=0xffffffff || MDB_SIZE_MAX%UINT_MAX
 # error "Two's complement, reasonably sized integer types, please"
 #endif
 
@@ -1028,7 +1028,7 @@ typedef struct MDB_node {
 #ifdef MISALIGNED_OK
 #define COPY_PGNO(dst,src)	dst = src
 #else
-#if SIZE_MAX > 4294967295UL
+#if MDB_SIZE_MAX > 0xffffffffU
 #define COPY_PGNO(dst,src)	do { \
 	unsigned short *s, *d;	\
 	s = (unsigned short *)&(src);	\
@@ -3551,7 +3551,7 @@ mdb_page_flush(MDB_txn *txn, int keep)
 		 * the write offset, to at least save the overhead of a Seek
 		 * system call.
 		 */
-		DPRINTF(("committing page %"Z"u", pgno));
+		DPRINTF(("committing page %"Y"u", pgno));
 		memset(&ov, 0, sizeof(ov));
 		ov.Offset = pos & 0xffffffff;
 		ov.OffsetHigh = pos >> 16 >> 16;
@@ -8165,7 +8165,7 @@ mdb_xcursor_init2(MDB_cursor *mc, MDB_xcursor *src_mx, int new_dupdata)
 		mx->mx_cursor.mc_flags |= C_INITIALIZED;
 		mx->mx_cursor.mc_ki[0] = 0;
 		mx->mx_dbflag = DB_VALID|DB_USRVALID|DB_DIRTY; /* DB_DIRTY guides mdb_cursor_touch */
-#if UINT_MAX < SIZE_MAX
+#if UINT_MAX < MDB_SIZE_MAX	/* matches mdb_xcursor_init1:NEED_CMP_CLONG() */
 		mx->mx_dbx.md_cmp = src_mx->mx_dbx.md_cmp;
 #endif
 	} else if (!(mx->mx_cursor.mc_flags & C_INITIALIZED)) {
diff --git a/libraries/liblmdb/mdb_stat.c b/libraries/liblmdb/mdb_stat.c
index 11c9e48..5c57072 100644
--- a/libraries/liblmdb/mdb_stat.c
+++ b/libraries/liblmdb/mdb_stat.c
@@ -153,7 +153,7 @@ int main(int argc, char *argv[])
 	if (freinfo) {
 		MDB_cursor *cursor;
 		MDB_val key, data;
-		size_t pages = 0, *iptr;
+		mdb_size_t pages = 0, *iptr;
 
 		printf("Freelist Status\n");
 		dbi = 0;
@@ -173,7 +173,7 @@ int main(int argc, char *argv[])
 			pages += *iptr;
 			if (freinfo > 1) {
 				char *bad = "";
-				size_t pg, prev;
+				mdb_size_t pg, prev;
 				ssize_t i, j, span = 0;
 				j = *iptr++;
 				for (i = j, prev = 1; --i >= 0; ) {
@@ -184,20 +184,20 @@ int main(int argc, char *argv[])
 					pg += span;
 					for (; i >= span && iptr[i-span] == pg; span++, pg++) ;
 				}
-				printf("    Transaction %"Z"u, %"Z"d pages, maxspan %"Z"d%s\n",
-					*(size_t *)key.mv_data, j, span, bad);
+				printf("    Transaction %"Y"u, %"Z"d pages, maxspan %"Z"d%s\n",
+					*(mdb_size_t *)key.mv_data, j, span, bad);
 				if (freinfo > 2) {
 					for (--j; j >= 0; ) {
 						pg = iptr[j];
 						for (span=1; --j >= 0 && iptr[j] == pg+span; span++) ;
-						printf(span>1 ? "     %9"Z"u[%"Z"d]\n" : "     %9"Z"u\n",
+						printf(span>1 ? "     %9"Y"u[%"Z"d]\n" : "     %9"Y"u\n",
 							pg, span);
 					}
 				}
 			}
 		}
 		mdb_cursor_close(cursor);
-		printf("  Free pages: %"Z"u\n", pages);
+		printf("  Free pages: %"Y"u\n", pages);
 	}
 
 	rc = mdb_open(txn, subname, 0, &dbi);