diff --git a/oryx/core/interpreters/harvest.py b/oryx/core/interpreters/harvest.py
index 7d4d6d6..231e9af 100644
--- a/oryx/core/interpreters/harvest.py
+++ b/oryx/core/interpreters/harvest.py
@@ -510,7 +510,7 @@ def handle_sow(self, *values, name, tag, tree, mode):
         raise ValueError(f'Variable has already been reaped: {name}')
     avals = tree_util.tree_unflatten(
         tree,
-        [jax_core.raise_to_shaped(jax_core.get_aval(v)) for v in values])
+        [jax_core.get_aval(v) for v in values])
     vals = tree_util.tree_unflatten(tree, values)
     pred = None
     if mode == 'cond_clobber':
@@ -792,7 +792,7 @@ def _get_harvest_metadata(closed_jaxpr, settings, *args):
   flat_args, in_tree = tree_util.tree_flatten(args)
   flat_fun, out_tree = api_util.flatten_fun_nokwargs(fun, in_tree)
   in_avals = jax_util.safe_map(
-      lambda a: jax_core.raise_to_shaped(jax_core.get_aval(a)),
+      lambda a: jax_core.get_aval(a),
       flat_args)
   pe.trace_to_jaxpr_dynamic(flat_fun, in_avals)
   metadata = aux()
@@ -841,7 +841,7 @@ def _reap_scan_rule(trace: HarvestTrace, *vals, length, reverse, jaxpr,
       cond_carry_avals[name] = None
     if mode == 'cond_clobber':
       reap_carry_avals[name] = aval
-      cond_carry_avals[name] = jax_core.raise_to_shaped(jax_core.get_aval(True))
+      cond_carry_avals[name] = jax_core.get_aval(True)
 
   body_fun = jax_core.jaxpr_as_fun(jaxpr)
 
@@ -929,7 +929,7 @@ def _reap_while_rule(trace: HarvestTrace, *tracers, cond_jaxpr, body_jaxpr,
       )
     reap_avals[k] = meta['aval']
     if mode == 'cond_clobber':
-      cond_avals[k] = jax_core.raise_to_shaped(jax_core.get_aval(True))
+      cond_avals[k] = jax_core.get_aval(True)
 
   cond_fun = jax_core.jaxpr_as_fun(cond_jaxpr)
   body_fun = jax_core.jaxpr_as_fun(body_jaxpr)
diff --git a/oryx/core/interpreters/inverse/core.py b/oryx/core/interpreters/inverse/core.py
index eecfcbe..425e372 100644
--- a/oryx/core/interpreters/inverse/core.py
+++ b/oryx/core/interpreters/inverse/core.py
@@ -141,7 +141,6 @@ def unknown(cls, aval):
   def new(cls, val):
     val = np.array(val)
     aval = jax_core.get_aval(val)
-    aval = jax_core.raise_to_shaped(aval)
     ndslice = NDSlice.new(val, np.zeros_like(val))
     return InverseAndILDJ(aval, frozenset([ndslice]))
 
diff --git a/oryx/core/primitive.py b/oryx/core/primitive.py
index 493dd18..cf1ec20 100644
--- a/oryx/core/primitive.py
+++ b/oryx/core/primitive.py
@@ -224,8 +224,7 @@ def subcall(self, name):
 tie_all_p = jax_core.Primitive('tie_all')
 tie_all_p.multiple_results = True
 tie_all_p.def_impl(lambda *args: args)
-tie_all_p.def_abstract_eval(lambda *args: safe_map(  # pylint: disable=g-long-lambda
-    jax_core.raise_to_shaped, args))
+tie_all_p.def_abstract_eval(lambda *args: args)
 
 mlir.register_lowering(tie_all_p, lambda c, *args: args)
 
diff --git a/oryx/core/trace_util.py b/oryx/core/trace_util.py
index 2ff61fe..c66db8a 100644
--- a/oryx/core/trace_util.py
+++ b/oryx/core/trace_util.py
@@ -42,7 +42,7 @@ def get_shaped_aval(x):
   if hasattr(x, 'dtype') and hasattr(x, 'shape'):
     return jax_core.ShapedArray(
         x.shape, dtypes.canonicalize_dtype(x.dtype, allow_extended_dtype=True))
-  return jax_core.raise_to_shaped(jax_core.get_aval(x))
+  return jax_core.get_aval(x)
 
 
 def pv_like(x, abstract=True):