diff --git a/qiskit_addon_utils/problem_generators/generate_time_evolution_circuit.py b/qiskit_addon_utils/problem_generators/generate_time_evolution_circuit.py
index 3bc2008..ed180f0 100644
--- a/qiskit_addon_utils/problem_generators/generate_time_evolution_circuit.py
+++ b/qiskit_addon_utils/problem_generators/generate_time_evolution_circuit.py
@@ -29,6 +29,7 @@ def generate_time_evolution_circuit(
     """Model the time evolution of an operator.
 
     .. plot::
+        :alt: Output from the previous code.
         :include-source:
 
         >>> from qiskit.quantum_info import SparsePauliOp
diff --git a/tox.ini b/tox.ini
index eef1dc0..47f659b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,7 +22,7 @@ commands =
 
 [testenv:lint]
 image-tester-commit = 7ae965ccf21c39e5170334ec7f4882756883860a
-deps = 
+deps =
   git+https://github.com/Qiskit/documentation.git@{[testenv:lint]image-tester-commit}\#egg=sphinx-alt-text-validator&subdirectory=scripts/image-tester
 basepython = python3.10
 extras =
@@ -34,7 +34,7 @@ commands =
   nbqa ruff docs/
   mypy qiskit_addon_utils/
   pylint -rn qiskit_addon_utils/ test/
-  sphinx-alt-text-validator -f qiskit_addon_utils -s qiskit_addon_utils/problem_generators/generate_time_evolution_circuit.py
+  sphinx-alt-text-validator -f qiskit_addon_utils
   nbqa pylint -rn docs/
   typos
   reno lint