diff --git a/doc/releases/changelog-dev.md b/doc/releases/changelog-dev.md
index f8b7311b9e..51824f759d 100644
--- a/doc/releases/changelog-dev.md
+++ b/doc/releases/changelog-dev.md
@@ -241,6 +241,9 @@
   This runtime stub is currently for mock execution only and should be treated as a placeholder
   operation. Internally, it functions just as a computational-basis measurement instruction.
 
+* Quantum subroutine stub.
+  [(#1774)](https://github.com/PennyLaneAI/catalyst/pull/1774)
+
 * PennyLane's arbitrary-basis measurement operations, such as
   :func:`qml.ftqc.measure_arbitrary_basis() <pennylane.ftqc.measure_arbitrary_basis>`, are now
   QJIT-compatible with program capture enabled.
diff --git a/frontend/catalyst/tracing/type_signatures.py b/frontend/catalyst/tracing/type_signatures.py
index 137154a9e6..b4090001c4 100644
--- a/frontend/catalyst/tracing/type_signatures.py
+++ b/frontend/catalyst/tracing/type_signatures.py
@@ -25,6 +25,7 @@
 from jax._src.core import shaped_abstractify
 from jax._src.interpreters.partial_eval import infer_lambda_input_type
 from jax._src.pjit import _flat_axes_specs
+from jax.core import AbstractValue
 from jax.tree_util import tree_flatten, tree_unflatten
 
 from catalyst.jax_extras import get_aval2
@@ -56,7 +57,7 @@ def params_are_annotated(fn: Callable):
     are_annotated = all(annotation is not inspect.Parameter.empty for annotation in annotations)
     if not are_annotated:
         return False
-    return all(isinstance(annotation, (type, jax.core.ShapedArray)) for annotation in annotations)
+    return all(isinstance(annotation, (type, AbstractValue)) for annotation in annotations)
 
 
 def get_type_annotations(fn: Callable):