diff --git a/src/ls_mysql.c b/src/ls_mysql.c
index f6e2438..f4d3908 100644
--- a/src/ls_mysql.c
+++ b/src/ls_mysql.c
@@ -339,7 +339,7 @@ static int cur_close (lua_State *L) {
 ** a reference to it on the cursor structure.
 */
 static void _pushtable (lua_State *L, cur_data *cur, size_t off) {
-	int *ref = (int *)((char *)cur + off);
+	int *ref = (int *)cur + off / sizeof(int);
 
 	/* If colnames or coltypes do not exist, create both. */
 	if (*ref == LUA_NOREF)
diff --git a/src/ls_postgres.c b/src/ls_postgres.c
index fb4f9e2..f952bcd 100644
--- a/src/ls_postgres.c
+++ b/src/ls_postgres.c
@@ -248,7 +248,7 @@ static void create_coltypes (lua_State *L, cur_data *cur) {
 ** a reference to it on the cursor structure.
 */
 static void _pushtable (lua_State *L, cur_data *cur, size_t off, creator func) {
-	int *ref = (int *)((char *)cur + off);
+	int *ref = (int *)cur + off / sizeof(int);
 	if (*ref != LUA_NOREF)
 		lua_rawgeti (L, LUA_REGISTRYINDEX, *ref);
 	else {