diff --git a/src/process_dataset/dataset_simulator/config.vsh.yaml b/src/process_dataset/dataset_simulator/config.vsh.yaml
index 383f4e1..c0c6833 100644
--- a/src/process_dataset/dataset_simulator/config.vsh.yaml
+++ b/src/process_dataset/dataset_simulator/config.vsh.yaml
@@ -39,7 +39,7 @@ arguments:
     default: 30
   - name: "--umi_lb"
     type: integer
-    description: Lower bound for number of cells at each spot. Default value is 1000.
+    description: Lower bound for number of UMIs at each spot. Default value is 1000.
     default: 1000
   - name: "--umi_ub"
     type: integer