diff --git a/src/tea3/tea3model.py b/src/tea3/tea3model.py
index 64a7683..0ba31f3 100644
--- a/src/tea3/tea3model.py
+++ b/src/tea3/tea3model.py
@@ -24,8 +24,8 @@ class Tea3Model:
         self.v = self.S.gens()
 
         self.x_bits = [list(self.v[i*8       : (i+1)*8      ]) for i in range(5)]
-        self.y_bits = [list(self.v[40 + i*8  : 40 + (i+1)*8]) for i in range(5)]
-        self.r_bits = [list(self.v[80 + i*8  : 80 + (i+1)*8]) for i in range(5)]
+        self.y_bits = [list(self.v[40 + i*8  : 40 + (i+1)*8 ]) for i in range(5)]
+        self.r_bits = [list(self.v[80 + i*8  : 80 + (i+1)*8 ]) for i in range(5)]
         self.R_bits = [list(self.v[120 + i*8 : 120 + (i+1)*8]) for i in range(8)]
         self.g = self.v[-1]