diff --git a/.github/workflows/check-filenames-pr.yml b/.github/workflows/check-filenames-pr.yml
new file mode 100644
index 00000000..f40b5a08
--- /dev/null
+++ b/.github/workflows/check-filenames-pr.yml
@@ -0,0 +1,35 @@
+name: Check Filenames on PR and Commits
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+  push:
+    branches:
+      - '**'
+
+jobs:
+  check-filenames:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 #v4.2.2
+        with:
+          fetch-depth: 0
+
+      - name: Check for invalid filenames
+        run: |
+          if [ "${{ github.event_name }}" = "pull_request" ]; then
+            invalid_files=$(git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ github.event.pull_request.head.sha }} | grep ":" || true)
+          else
+            invalid_files=$(git diff --name-only ${{ github.event.before }} ${{ github.event.after }} | grep ":" || true)
+            if [ -z "$invalid_files" ]; then
+              # Also check all files in the current commit
+              invalid_files=$(git ls-files | grep ":" || true)
+            fi
+          fi
+
+          if [ ! -z "$invalid_files" ]; then
+            echo "Error: The following files contain ':' in their names, which is not compatible with Windows:"
+            echo "$invalid_files"
+            exit 1
+          fi
\ No newline at end of file
diff --git a/data_gathering/mappings/ISO20547-4:2020.md b/data_gathering/mappings/ISO20547-4_2020.md
similarity index 100%
rename from data_gathering/mappings/ISO20547-4:2020.md
rename to data_gathering/mappings/ISO20547-4_2020.md