diff --git a/egs/aishell/ASR/RESULTS.md b/egs/aishell/ASR/RESULTS.md
index 3e06ad372..79026112e 100644
--- a/egs/aishell/ASR/RESULTS.md
+++ b/egs/aishell/ASR/RESULTS.md
@@ -6,7 +6,7 @@
 
 [./zipformer](./zipformer)
 
-It's reworked Zipformer with Pruned RNNT loss, note that results below are produced by model trained on data without speed perturbation applied.
+It's reworked Zipformer with Pruned RNNT loss.
 **Caution**: It uses `--context-size=1`.
 
 ##### normal-scaled model, number of model parameters: 73412551, i.e., 73.41 M
@@ -55,8 +55,9 @@ for m in modified_beam_search fast_beam_search ; do
 done
 ```
 
+Note that results below are produced by model trained on data without speed perturbation applied.
 
-**⚠️ If you prefer to have the speed perturbation disabled, please manually set `--perturb-speed` to `False` for `./local/compute_fbank_aishell.py` in the `prepare.sh` script.**
+**⚠️ If you prefer to have the speed perturbation disabled, please pass `false` to `--perturb-speed` of the `prepare.sh` script as demonstrated below.**
 
 ##### normal-scaled model, number of model parameters: 73412551, i.e., 73.41 M
 
diff --git a/egs/aishell2/ASR/RESULTS.md b/egs/aishell2/ASR/RESULTS.md
index 7e635aa36..a79b50147 100644
--- a/egs/aishell2/ASR/RESULTS.md
+++ b/egs/aishell2/ASR/RESULTS.md
@@ -8,7 +8,7 @@
 
 It's reworked Zipformer with Pruned RNNT loss, note that results below are produced by model trained on data without speed perturbation applied.
 
-**⚠️ If you prefer to have the speed perturbation disabled, please manually set `--perturb-speed` to `False` for `./local/compute_fbank_aishell.py` in the `prepare.sh` script.**
+**⚠️ If you prefer to have the speed perturbation disabled, please pass `false` to `--perturb-speed` of the `prepare.sh` script as demonstrated below.**
 
 |                                       |  dev-ios  | test-ios | comment                      |
 |---------------------------------------|---------|----------|----------------------------------|
diff --git a/egs/aishell4/ASR/RESULTS.md b/egs/aishell4/ASR/RESULTS.md
index 92f461de9..a59c6a5f3 100644
--- a/egs/aishell4/ASR/RESULTS.md
+++ b/egs/aishell4/ASR/RESULTS.md
@@ -10,7 +10,7 @@
 
 It's reworked Zipformer with Pruned RNNT loss, note that results below are produced by model trained on data without speed perturbation applied.
 
-**⚠️ If you prefer to have the speed perturbation disabled, please manually set `--perturb-speed` to `False` for `./local/compute_fbank_aishell.py` in the `prepare.sh` script.**
+**⚠️ If you prefer to have the speed perturbation disabled, please pass `false` to `--perturb-speed` of the `prepare.sh` script as demonstrated below.**
 
 |                        | test | comment                               |
 |------------------------|------|---------------------------------------|