diff --git a/tinygrad/uop/spec.py b/tinygrad/uop/spec.py
index 31545e8395..c72babb661 100644
--- a/tinygrad/uop/spec.py
+++ b/tinygrad/uop/spec.py
@@ -291,7 +291,9 @@ full_spec = PatternMatcher([
 
   # temp VECTORIZE/INDEX during rewrite have the wrong dtype
   (UPat(Ops.STACK), lambda: True),
-  (UPat(Ops.INDEX), lambda: True),
+
+  # no more bool in index
+  (UPat(Ops.INDEX, name="idx"), lambda idx: not any([dtypes.is_bool(x.dtype) for x in idx.src[1:]])),
 
   # all loads/stores
   (UPat((Ops.LOAD, Ops.STORE)), lambda: True),