diff --git a/tinygrad/shape/shapetracker.py b/tinygrad/shape/shapetracker.py
index 417f1441..0c39f22d 100644
--- a/tinygrad/shape/shapetracker.py
+++ b/tinygrad/shape/shapetracker.py
@@ -12,13 +12,10 @@ from tinygrad.shape.view import View
 def to_shape_strides(shape:Tuple[int, ...], strides:Tuple[int, ...]) -> Tuple[Tuple[int, int], ...]:
   assert len(shape) == len(strides)
   ret = [(shape[0], strides[0])] if shape else []
-  for i in range(1, len(shape)):
-    if ret[-1][1] == shape[i]*strides[i] or ret[-1][0] == 1:
-      ret[-1] = (ret[-1][0] * shape[i], strides[i])
-    elif shape[i] == 1:
-      continue
-    else:
-      ret.append((shape[i], strides[i]))
+  for s,st in zip(shape[1:], strides[1:]):
+    ps,pst = ret[-1]
+    if pst == s*st or ps == 1: ret[-1] = (ps*s, st)
+    elif s != 1: ret.append((s, st))
   return tuple(ret)
 
 def expr_node_mask(view:View, idx:Node, valid:Optional[Node]=None) -> Node: