diff --git a/tinygrad/uop/spec.py b/tinygrad/uop/spec.py
index 475705c263..7aaaccdce4 100644
--- a/tinygrad/uop/spec.py
+++ b/tinygrad/uop/spec.py
@@ -208,7 +208,7 @@ spec_program = PatternMatcher([
    lambda x: False if x.dtype.count > 1 and (x.dtype.count,) != x.shape else None),
 
   # STACK/GEP in program. TODO: this should match Tensor
-  (UPat(Ops.STACK, name="x"), lambda x: len(x.src)>1 and len(x.src) == x.dtype.vcount and all(x.dtype == y.dtype.vec(len(x.src)) for y in x.src)),
+  (UPat(Ops.STACK, name="x"), lambda x: len(x.src)>1),
   (UPat(Ops.GEP, src=(UPat.var("src"),), name="gep"), lambda gep,src: gep.dtype == src.dtype.scalar()),
 
   # if has a <gate, index_for_dedup>