diff --git a/Dockerfile b/Dockerfile
index 564c15e..240575f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,9 +9,6 @@ LABEL version="1.0.0" \
       com.github.actions.icon="check" \
       com.github.actions.color="green"
 
-# Set up local envs in order to allow for special chars (non-asci) in filenames.
-ENV LC_ALL="C.UTF-8"
-
 # https://help.github.com/en/actions/creating-actions/dockerfile-support-for-github-actions#user
 USER root
 
diff --git a/README.md b/README.md
index 84204ee..b7b95af 100644
--- a/README.md
+++ b/README.md
@@ -52,6 +52,17 @@ jobs:
         SONAR_HOST_URL: ${{ secrets.SONAR_HOST_URL }}
 ```
 
+If your source code file names contain special characters that are not covered by the locale range of `en_US.UTF-8`, you can configure your desired locale like this:
+
+```yaml
+    - name: SonarQube Scan
+      uses: sonarsource/sonarqube-scan-action@master
+      env:
+        SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+        SONAR_HOST_URL: ${{ secrets.SONAR_HOST_URL }}
+        LC_ALL: "ru_RU.UTF-8"
+```
+
 You can change the analysis base directory by using the optional input `projectBaseDir` like this:
 
 ```yaml