diff --git a/pr_agent/settings/pr_custom_labels.toml b/pr_agent/settings/pr_custom_labels.toml
index f295798a..214d97a6 100644
--- a/pr_agent/settings/pr_custom_labels.toml
+++ b/pr_agent/settings/pr_custom_labels.toml
@@ -16,7 +16,7 @@ You must use the following YAML schema to format your answer:
 PR Type:
   type: array
 {%- if enable_custom_labels %}
-  description: One or more labels that describe the PR type. Don't output the description in the parentheses.
+  description: Labels that describe the PR type. Don't output the description in the parentheses. If none of the labels is relevant to the PR, output an empty array.
 {%- endif %}
   items:
     type: string
diff --git a/pr_agent/settings/pr_description_prompts.toml b/pr_agent/settings/pr_description_prompts.toml
index cfb42948..761c36c1 100644
--- a/pr_agent/settings/pr_description_prompts.toml
+++ b/pr_agent/settings/pr_description_prompts.toml
@@ -30,7 +30,7 @@ PR Type:
 {%- if enable_custom_labels %}
 PR Labels:
   type: array
-  description: One or more labels that describe the PR labels. Don't output the description in the parentheses.
+  description: Labels that are applicable to the Pull Request. Don't output the description in the parentheses. If none of the labels is relevant to the PR, output an empty array.
   items:
     type: string
     enum: