diff --git a/tinygrad/ops.py b/tinygrad/ops.py
index 5448dfb408..d0919c77be 100644
--- a/tinygrad/ops.py
+++ b/tinygrad/ops.py
@@ -84,7 +84,7 @@ class UOps(HashEnum):
   """
   Holds `UOps.STORE`. SINK defines the AST for a Kernel.
 
-  - **`dtype`**: `None`
+  - **`dtype`**: `dtypes.void`
   - **`src`**: `Tuple[UOp, ...]`, Only global STOREs are allowed.
   - **`arg`**: `Optional[KernelInfo]`
 
@@ -104,7 +104,7 @@ class UOps(HashEnum):
   """
   Defines the ShapeTracker for a buffer UOp `UOps.LOAD`, `UOps.STORE` or `UOps.VALID`.
 
-  - **`dtype`**: `None`
+  - **`dtype`**: `dtypes.void`
   - **`src`**: `Tuple[]`
   - **`arg`**: `ShapeTracker`
   """
@@ -129,10 +129,10 @@ class UOps(HashEnum):
       UOp(UOps.REDUCE_AXIS, dtypes.int, arg=(BinaryOps.ADD, (0, 1)), src=(
         UOp(UOps.LOAD, dtypes.int, arg=None, src=(
           x3:=UOp(UOps.DEFINE_GLOBAL, PtrDType(dtypes.int), arg=1, src=()),
-          UOp(UOps.SHAPETRACKER, None, arg=ShapeTracker(views=(View(shape=(32, 32), strides=(32, 1), offset=0, mask=None, contiguous=True),)), src=()),)),)),)),
+          UOp(UOps.SHAPETRACKER, dtypes.void, arg=ShapeTracker(views=(View(shape=(32, 32), strides=(32, 1), offset=0, mask=None, contiguous=True),)), src=()),)),)),)),
     UOp(UOps.LOAD, dtypes.int, arg=None, src=(
        x3,
-      UOp(UOps.SHAPETRACKER, None, arg=ShapeTracker(views=(View(shape=(32, 32), strides=(32, 1), offset=0, mask=None, contiguous=True),)), src=()),)),))
+      UOp(UOps.SHAPETRACKER, dtypes.void, arg=ShapeTracker(views=(View(shape=(32, 32), strides=(32, 1), offset=0, mask=None, contiguous=True),)), src=()),)),))
   ```
 
   The scheduler rewrites this by pushing the expand in SWIZZLE through the reduce, to the LOAD:
@@ -143,16 +143,16 @@ class UOps(HashEnum):
   -     UOp(UOps.REDUCE_AXIS, dtypes.int, arg=(BinaryOps.ADD, (0, 1)), src=(
   -       UOp(UOps.LOAD, dtypes.int, arg=None, src=(
   -         x3:=UOp(UOps.DEFINE_GLOBAL, PtrDType(dtypes.int), arg=1, src=()),
-  -         UOp(UOps.SHAPETRACKER, None, arg=ShapeTracker(views=(View(shape=(32, 32), strides=(32, 1), offset=0, mask=None, contiguous=True),)), src=()),)),)),)),
+  -         UOp(UOps.SHAPETRACKER, dtypes.void, arg=ShapeTracker(views=(View(shape=(32, 32), strides=(32, 1), offset=0, mask=None, contiguous=True),)), src=()),)),)),)),
   +   UOp(UOps.REDUCE_AXIS, dtypes.int, arg=(BinaryOps.ADD, (2, 3)), src=(
   +     UOp(UOps.LOAD, dtypes.int, arg=None, src=(
   +       x2:=UOp(UOps.DEFINE_GLOBAL, PtrDType(dtypes.int), arg=1, src=()),
-  +       UOp(UOps.SHAPETRACKER, None, arg=ShapeTracker(views=(View(shape=(32, 32, 32, 32), strides=(0, 0, 32, 1), offset=0, mask=None, contiguous=False),)), src=()),)),)),
+  +       UOp(UOps.SHAPETRACKER, dtypes.void, arg=ShapeTracker(views=(View(shape=(32, 32, 32, 32), strides=(0, 0, 32, 1), offset=0, mask=None, contiguous=False),)), src=()),)),)),
     UOp(UOps.LOAD, dtypes.int, arg=None, src=(
   -      x3,
-  -     UOp(UOps.SHAPETRACKER, None, arg=ShapeTracker(views=(View(shape=(32, 32), strides=(32, 1), offset=0, mask=None, contiguous=True),)), src=()),)),))
+  -     UOp(UOps.SHAPETRACKER, dtypes.void, arg=ShapeTracker(views=(View(shape=(32, 32), strides=(32, 1), offset=0, mask=None, contiguous=True),)), src=()),)),))
   +      x2,
-  +     UOp(UOps.SHAPETRACKER, None, arg=ShapeTracker(views=(View(shape=(32, 32, 1, 1), strides=(32, 1, 0, 0), offset=0, mask=None, contiguous=True),)), src=()),)),))
+  +     UOp(UOps.SHAPETRACKER, dtypes.void, arg=ShapeTracker(views=(View(shape=(32, 32, 1, 1), strides=(32, 1, 0, 0), offset=0, mask=None, contiguous=True),)), src=()),)),))
 
   ```
 
@@ -265,7 +265,7 @@ class UOps(HashEnum):
   """
   STORE = auto()
   """
-  - **`dtype`**: `None`
+  - **`dtype`**: `dtypes.void`
   - **`src`**:
 
     Similar to LOAD, the scheduler and Kernel create STOREs with a SHAPETRACKER uop in src:
@@ -293,7 +293,7 @@ class UOps(HashEnum):
   """
   Inserts a warp sync between local stores and local loads.
 
-  - **`dtype`**: `None`
+  - **`dtype`**: `dtypes.void`
   - **`src`**: `Tuple[UOp, ...]`, Only local STOREs are allowed.
   - **`arg`**: `None`
   """
@@ -301,7 +301,7 @@ class UOps(HashEnum):
   """
   Gates a single STORE to global memory. The IF block could also contain additional UOps the STORE depends on.
 
-  - **`dtype`**: `None`
+  - **`dtype`**: `dtypes.void`
   - **`src`**:
     `Tuple[UOp, UOp]`
       - Gate UOp, can only return `dtypes.bool`
@@ -314,7 +314,7 @@ class UOps(HashEnum):
   ```
   UOp(UOps.IF, src=(
     UOp(UOps.ALU, dtypes.bool, (...), BinaryOps.CMPNE),
-    UOp(UOps.BARRIER, None, (...))))
+    UOp(UOps.BARRIER, dtypes.void, (...))))
   ```
   The kernel:
   ```