diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 5f205f298..ce200cc11 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -61,6 +61,8 @@ jobs:
       pip install -r requirements.txt
     displayName: 'Install dependencies'
 
+  # Perform basic checks for most important errors (syntax etc.) Uses the config
+  # defined in .flake8 and overwrites the selected codes.
   - script: python -m flake8 spacy --count --select=E901,E999,F821,F822,F823 --show-source --statistics
     displayName: 'flake8'