diff --git a/src/backends/neon/workloads/NeonUnidirectionalSequenceLstmFloatWorkload.hpp b/src/backends/neon/workloads/NeonUnidirectionalSequenceLstmFloatWorkload.hpp
index 10c2ecb..776afd3 100644
--- a/src/backends/neon/workloads/NeonUnidirectionalSequenceLstmFloatWorkload.hpp
+++ b/src/backends/neon/workloads/NeonUnidirectionalSequenceLstmFloatWorkload.hpp
@@ -31,10 +31,13 @@
     //
     // ACL layers required to fully form a Unidirectional Sequence LSTM layer.
     //
+
+    // permutation for input (only used when input is batch major)
     mutable std::unique_ptr<arm_compute::NEPermute> m_Permute1;
     mutable std::unique_ptr<arm_compute::IFunction> m_Splitter;
     mutable std::vector<std::unique_ptr<arm_compute::NELSTMLayer>> m_Layers;
     mutable std::unique_ptr<arm_compute::NEConcatenateLayer> m_Concat;
+    // permutation for output (only used when input is batch major)
     mutable std::unique_ptr<arm_compute::NEPermute> m_Permute2;
 
     //