diff --git a/tinygrad/dtype.py b/tinygrad/dtype.py
index c8f40c8ea3414..10707e40067c8 100644
--- a/tinygrad/dtype.py
+++ b/tinygrad/dtype.py
@@ -19,6 +19,7 @@ def vec(self, sz:int):
     assert self.count == 1, f"can't vectorize {self} with size {sz}"
     if sz == 1 or self.name == 'void': return self  # void doesn't vectorize, and sz=1 is scalar
     return DType(self.priority, self.itemsize*sz, f"{INVERSE_DTYPES_DICT[self.name]}{sz}", None, sz)
+  def ptr(self) -> Union[PtrDType, ImageDType]: return PtrDType(self)
   def scalar(self) -> DType: return DTYPES_DICT[self.name[:-len(str(self.count))]] if self.count > 1 else self
 
 # dependent typing?
@@ -29,6 +30,7 @@ class ImageDType(DType):
   local: bool = False  # images are never local
   def scalar(self) -> DType: return self.base
   def vec(self, sz:int): return self.base.vec(sz)
+  def ptr(self) -> Union[PtrDType, ImageDType]: return self
   def __repr__(self): return f"dtypes.{self.name}({self.shape})"
 
 # @dataclass(frozen=True, init=False, repr=False, eq=False)
diff --git a/tinygrad/engine/schedule.py b/tinygrad/engine/schedule.py
index 948af071e8c08..68e93d8fb1c55 100644
--- a/tinygrad/engine/schedule.py
+++ b/tinygrad/engine/schedule.py
@@ -122,7 +122,7 @@ def merge_double_reduce(root:UOp, first_reduce:UOp) -> UOp:
   (UPat(UOps.REDUCE_AXIS, src=(UPat(UOps.REDUCE_AXIS, name="first_reduce"),), name="root"), merge_double_reduce),
 ])
 
-enumerate_bufs = PatternMatcher([(UPat(UOps.BUFFER, name="x"), lambda ctx,x: UOp.define_global(x.dtype, ctx.bufs.index(x.arg)))])
+enumerate_bufs = PatternMatcher([(UPat(UOps.BUFFER, name="x"), lambda ctx,x: UOp(UOps.DEFINE_GLOBAL, x.dtype.ptr(), (), ctx.bufs.index(x.arg)))])
 
 def full_ast_rewrite(sink:UOp, ctx:ScheduleItemContext) -> UOp:
   if not AST_REWRITE: return sink
diff --git a/tinygrad/ops.py b/tinygrad/ops.py
index d02690c28405f..734616d187945 100644
--- a/tinygrad/ops.py
+++ b/tinygrad/ops.py
@@ -246,8 +246,6 @@ def _const(dtype:DType, b:Tuple[ConstType, ...]|ConstType|Variable):
   @functools.lru_cache(None)
   def define_var(name:str, dtype:DType, min_val:ConstType, max_val:ConstType): return UOp(UOps.DEFINE_VAR, dtype, arg=(name, min_val, max_val))
   @staticmethod
-  def define_global(dtype:DType, arg): return UOp(UOps.DEFINE_GLOBAL, dtype if isinstance(dtype, ImageDType) else PtrDType(dtype), (), arg)
-  @staticmethod
   def range(dtype:DType, start:ConstType, end:ConstType, idx:int):
     return UOp(UOps.RANGE, dtype=dtype, src=(UOp.const(dtype, start), UOp.const(dtype, end)), arg=(idx,))
   def reduce(self, op:BinaryOps, *rng:UOp): return UOp(UOps.REDUCE, self.dtype, (self,) + rng, op)