diff --git a/pr_agent/tools/pr_similar_issue.py b/pr_agent/tools/pr_similar_issue.py
index 08a07ee1..c3a0793b 100644
--- a/pr_agent/tools/pr_similar_issue.py
+++ b/pr_agent/tools/pr_similar_issue.py
@@ -49,7 +49,7 @@ class PRSimilarIssue:
         run_from_scratch = False
         if run_from_scratch:  # for debugging
             pinecone.init(api_key=api_key, environment=environment)
-            if not index_name in pinecone.list_indexes():
+            if index_name in pinecone.list_indexes():
                 get_logger().info('Removing index...')
                 pinecone.delete_index(index_name)
                 get_logger().info('Done')