diff --git a/tetromino.py b/tetromino.py
index f108d1d..924c780 100644
--- a/tetromino.py
+++ b/tetromino.py
@@ -177,8 +177,8 @@ class Tetromino():
             'd': {0: 9, 1: 9, 2: 9, 3: 9},
             't': {0: 9, 1: 9, 2: 9, 3: 9},
             's': {0: 9, 1: 8, 2: 9, 3: 8},
-            'z': {0: 9, 1: 8, 2: 9, 3: 8},
-            'j': {0: 8, 1: 9, 2: 8, 3: 9},
+            'z': {0: 10, 1: 8, 2: 10, 3: 8},
+            'j': {0: 10, 1: 9, 2: 10, 3: 9},
             'l': {0: 8, 1: 9, 2: 8, 3: 9}
          }
         return offset_map.get(self.letter)[rotation]