diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 19705a0618..7439dd015b 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -5752,15 +5752,21 @@ set1:
 					return rc;
 			}
 		} else if (op == MDB_GET_BOTH || op == MDB_GET_BOTH_RANGE) {
-			MDB_val d2;
-			if ((rc = mdb_node_read(mc->mc_txn, leaf, &d2)) != MDB_SUCCESS)
+			MDB_val olddata;
+			MDB_cmp_func *dcmp;
+			if ((rc = mdb_node_read(mc->mc_txn, leaf, &olddata)) != MDB_SUCCESS)
 				return rc;
-			rc = mc->mc_dbx->md_dcmp(data, &d2);
+			dcmp = mc->mc_dbx->md_dcmp;
+#if UINT_MAX < SIZE_MAX
+			if (dcmp == mdb_cmp_int && olddata.mv_size == sizeof(size_t))
+				dcmp = mdb_cmp_clong;
+#endif
+			rc = dcmp(data, &olddata);
 			if (rc) {
 				if (op == MDB_GET_BOTH || rc > 0)
 					return MDB_NOTFOUND;
 				rc = 0;
-				*data = d2;
+				*data = olddata;
 			}
 
 		} else {
@@ -6270,16 +6276,17 @@ more:
 
 			/* Was a single item before, must convert now */
 			if (!F_ISSET(leaf->mn_flags, F_DUPDATA)) {
+				MDB_cmp_func *dcmp;
 				/* Just overwrite the current item */
 				if (flags == MDB_CURRENT)
 					goto current;
-
+				dcmp = mc->mc_dbx->md_dcmp;
 #if UINT_MAX < SIZE_MAX
-				if (mc->mc_dbx->md_dcmp == mdb_cmp_int && olddata.mv_size == sizeof(size_t))
-					mc->mc_dbx->md_dcmp = mdb_cmp_clong;
+				if (dcmp == mdb_cmp_int && olddata.mv_size == sizeof(size_t))
+					dcmp = mdb_cmp_clong;
 #endif
 				/* does data match? */
-				if (!mc->mc_dbx->md_dcmp(data, &olddata)) {
+				if (!dcmp(data, &olddata)) {
 					if (flags & MDB_NODUPDATA)
 						return MDB_KEYEXIST;
 					/* overwrite it */
@@ -7076,15 +7083,13 @@ mdb_xcursor_init1(MDB_cursor *mc, MDB_node *node)
 				mx->mx_db.md_flags |= MDB_INTEGERKEY;
 		}
 	}
-#if UINT_MAX < SIZE_MAX
-	if (mc->mc_dbx->md_dcmp == mdb_cmp_int && mx->mx_db.md_pad == sizeof(size_t)) {
-		mc->mc_dbx->md_dcmp = mdb_cmp_clong;
-		mx->mx_dbx.md_cmp = mdb_cmp_clong;
-	}
-#endif
 	DPRINTF(("Sub-db -%u root page %"Z"u", mx->mx_cursor.mc_dbi,
 		mx->mx_db.md_root));
 	mx->mx_dbflag = DB_VALID|DB_DIRTY; /* DB_DIRTY guides mdb_cursor_touch */
+#if UINT_MAX < SIZE_MAX
+	if (mx->mx_dbx.md_cmp == mdb_cmp_int && mx->mx_db.md_pad == sizeof(size_t))
+		mx->mx_dbx.md_cmp = mdb_cmp_clong;
+#endif
 }
 
 /** Initialize a cursor for a given transaction and database. */