diff --git a/.github/workflows/validate-config.yml b/.github/workflows/validate-config.yml
index 9ed27b1..bf03b77 100644
--- a/.github/workflows/validate-config.yml
+++ b/.github/workflows/validate-config.yml
@@ -1,16 +1,16 @@
 name: Validate configuration files
 
 on:
-  push:
+  pull_request:
+    types: [opened, synchronize, reopened]
     branches:
-      - '**'
+      - 'main'
+      - 'fix-rule-on-validate-config'
 
 jobs:
   validate_json_files:
     runs-on: ubuntu-latest
 
-    if: github.ref != 'refs/heads/main'
-
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
diff --git a/README.md b/README.md
index 98b0f1d..d11511d 100644
--- a/README.md
+++ b/README.md
@@ -66,4 +66,6 @@ To add a new protocol or update existing data:
 Please ensure that:
 
  - All fields are correctly filled.
- - The integration URL is valid and points to the appropriate page.
\ No newline at end of file
+ - The integration URL is valid and points to the appropriate page.
+
+