diff --git a/camelot/parsers/lattice.py b/camelot/parsers/lattice.py
index cca6789..14430c8 100644
--- a/camelot/parsers/lattice.py
+++ b/camelot/parsers/lattice.py
@@ -273,8 +273,8 @@ class Lattice(BaseParser):
         t_bbox['vertical'] = text_in_bbox(tk, self.vertical_text)
         self.t_bbox = t_bbox
 
-        for direction in t_bbox:
-            t_bbox[direction].sort(key=lambda x: (-x.y0, x.x0))
+        for direction in self.t_bbox:
+            self.t_bbox[direction].sort(key=lambda x: (x.x0, -x.y0))
 
         cols, rows = zip(*self.table_bbox[tk])
         cols, rows = list(cols), list(rows)
diff --git a/camelot/parsers/stream.py b/camelot/parsers/stream.py
index 0fbae71..d9481cc 100644
--- a/camelot/parsers/stream.py
+++ b/camelot/parsers/stream.py
@@ -296,7 +296,7 @@ class Stream(BaseParser):
         self.t_bbox = t_bbox
 
         for direction in self.t_bbox:
-            self.t_bbox[direction].sort(key=lambda x: (-x.y0, x.x0))
+            self.t_bbox[direction].sort(key=lambda x: (x.x0, -x.y0))
 
         text_x_min, text_y_min, text_x_max, text_y_max = self._text_bbox(self.t_bbox)
         rows_grouped = self._group_rows(self.t_bbox['horizontal'], row_close_tol=self.row_close_tol)