diff --git a/test/external/process_replay/helpers.py b/test/external/process_replay/helpers.py
index b8b9880c..ca7a2d59 100644
--- a/test/external/process_replay/helpers.py
+++ b/test/external/process_replay/helpers.py
@@ -1,17 +1,7 @@
 from dataclasses import dataclass
-import difflib, logging, traceback, subprocess
+import traceback, subprocess
 from typing import Dict, Optional
-from tinygrad.helpers import ContextVar, colored, getenv
-
-def print_diff(s0, s1, unified=getenv("UNIFIED_DIFF",1)):
-  if not logging.getLogger().hasHandlers(): logging.basicConfig(level=logging.INFO, format="%(message)s")
-  if unified:
-    lines = list(difflib.unified_diff(str(s0).splitlines(), str(s1).splitlines()))
-    diff = "\n".join(colored(line, "red" if line.startswith("-") else "green" if line.startswith("+") else None) for line in lines)
-  else:
-    import ocdiff
-    diff = ocdiff.console_diff(str(s0), str(s1))
-  logging.info(diff)
+from tinygrad.helpers import ContextVar, getenv
 
 @dataclass(frozen=True)
 class ProcessReplayContext:
diff --git a/test/external/process_replay/process_replay.py b/test/external/process_replay/process_replay.py
index 85c753db..2f59c7fc 100755
--- a/test/external/process_replay/process_replay.py
+++ b/test/external/process_replay/process_replay.py
@@ -5,9 +5,10 @@ from typing import Callable, List, Tuple, Union, cast
 from tinygrad.engine.schedule import full_ast_rewrite
 from tinygrad.helpers import VERSION, Context, ContextVar, colored, db_connection, getenv, tqdm
 from tinygrad.codegen.kernel import Kernel, Opt
-from test.external.process_replay.helpers import ProcessReplayContext, print_diff
 from tinygrad.ops import UOp
 from tinygrad.renderer import Renderer
+from test.helpers import print_diff
+from test.external.process_replay.helpers import ProcessReplayContext
 
 # *** process replay settings
 
diff --git a/test/helpers.py b/test/helpers.py
index ac566493..2e0c92fb 100644
--- a/test/helpers.py
+++ b/test/helpers.py
@@ -1,16 +1,14 @@
-import sys, time
+import sys, time, logging, difflib
 from typing import Callable, Optional, Tuple, TypeVar
 import numpy as np
-from test.external.process_replay.helpers import print_diff
 from tinygrad import Tensor, Device, dtypes
-from tinygrad.ops import UOp, UOps
+from tinygrad.ops import UOp, UOps, sint
 from tinygrad.shape.shapetracker import ShapeTracker
 from tinygrad.tensor import _to_np_dtype
 from tinygrad.engine.realize import Runner
 from tinygrad.dtype import ConstType, DType
 from tinygrad.nn.state import get_parameters
-from tinygrad.helpers import Context, CI, OSX, getenv
-from tinygrad.ops import sint
+from tinygrad.helpers import Context, CI, OSX, getenv, colored
 
 def derandomize_model(model):
   with Context(GRAPH=0):
@@ -56,8 +54,18 @@ def rand_for_dtype(dt:DType, size:int):
     return np.random.choice([True, False], size=size)
   return np.random.uniform(-10, 10, size=size).astype(_to_np_dtype(dt))
 
+def print_diff(s0, s1, unified=getenv("UNIFIED_DIFF",1)):
+  if not logging.getLogger().hasHandlers(): logging.basicConfig(level=logging.INFO, format="%(message)s")
+  if unified:
+    lines = list(difflib.unified_diff(str(s0).splitlines(), str(s1).splitlines()))
+    diff = "\n".join(colored(line, "red" if line.startswith("-") else "green" if line.startswith("+") else None) for line in lines)
+  else:
+    import ocdiff
+    diff = ocdiff.console_diff(str(s0), str(s1))
+  logging.info(diff)
+
 def assert_equiv_uops(u1:UOp, u2:UOp) -> None:
-  if u1.key != u2.key:
+  if u1 is not u2:
     print_diff(u1, u2)
     raise AssertionError("uops aren't equal.")