diff --git a/pr_agent/algo/utils.py b/pr_agent/algo/utils.py
index 6a23d609..e7d9d5f4 100644
--- a/pr_agent/algo/utils.py
+++ b/pr_agent/algo/utils.py
@@ -1028,7 +1028,7 @@ def process_description(description_full: str) -> Tuple[str, List]:
     if not description_full:
         return "", []
 
-    description_split = description_full.split(PRDescriptionHeader.CHANGES_WALKTHROUGH)
+    description_split = description_full.split(PRDescriptionHeader.CHANGES_WALKTHROUGH.value)
     base_description_str = description_split[0]
     changes_walkthrough_str = ""
     files = []
diff --git a/pr_agent/git_providers/azuredevops_provider.py b/pr_agent/git_providers/azuredevops_provider.py
index de782998..501b1440 100644
--- a/pr_agent/git_providers/azuredevops_provider.py
+++ b/pr_agent/git_providers/azuredevops_provider.py
@@ -404,7 +404,7 @@ class AzureDevopsProvider(GitProvider):
                 pr_body = pr_body[:ind]
 
             if len(pr_body) > MAX_PR_DESCRIPTION_AZURE_LENGTH:
-                changes_walkthrough_text = PRDescriptionHeader.CHANGES_WALKTHROUGH
+                changes_walkthrough_text = PRDescriptionHeader.CHANGES_WALKTHROUGH.value
                 ind = pr_body.find(changes_walkthrough_text)
                 if ind != -1:
                     pr_body = pr_body[:ind]
diff --git a/pr_agent/tools/pr_description.py b/pr_agent/tools/pr_description.py
index 1d397a54..64355b60 100644
--- a/pr_agent/tools/pr_description.py
+++ b/pr_agent/tools/pr_description.py
@@ -501,7 +501,7 @@ extra_file_yaml =
                     pr_body += "</details>\n"
             elif 'pr_files' in key.lower() and get_settings().pr_description.enable_semantic_files_types:
                 changes_walkthrough, pr_file_changes = self.process_pr_files_prediction(changes_walkthrough, value)
-                changes_walkthrough = f"{PRDescriptionHeader.CHANGES_WALKTHROUGH}\n{changes_walkthrough}"
+                changes_walkthrough = f"{PRDescriptionHeader.CHANGES_WALKTHROUGH.value}\n{changes_walkthrough}"
             else:
                 # if the value is a list, join its items by comma
                 if isinstance(value, list):