diff --git a/.flake8 b/.flake8
index 1d80093..2afa5b0 100644
--- a/.flake8
+++ b/.flake8
@@ -16,3 +16,4 @@ per-file-ignores =
     ./i.sentinel_2.autotraining/i.sentinel_2.autotraining.py: E501,F821
     ./i.sentinel_2.parallel.index/i.sentinel_2.parallel.index.py: E501,F821
     ./i.sentinel_2.sen2cor/i.sentinel_2.sen2cor.py: E501,F821
+    ./i.sentinel_2.ndvidiff/i.sentinel_2.ndvidiff.py: E501,F821
diff --git a/.github/workflows/linting.yml b/.github/workflows/linting.yml
index e2f4dbf..199c06d 100644
--- a/.github/workflows/linting.yml
+++ b/.github/workflows/linting.yml
@@ -1,8 +1,11 @@
 name: Python Flake8, black and pylint code quality check
 
-on: [push]
+on: [push, pull_request]
 
 
 jobs:
   lint:
     uses: mundialis/github-workflows/.github/workflows/linting.yml@main
+    with:
+      VALIDATE_HTML: false
+