diff --git a/build-resources/pom.xml b/build-resources/pom.xml
index 588cd5df59b..6e5113615dc 100644
--- a/build-resources/pom.xml
+++ b/build-resources/pom.xml
@@ -6,6 +6,10 @@
   <name>Jetty :: Build Resources</name>
   <packaging>jar</packaging>
 
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
   <build>
     <resources>
       <resource>
diff --git a/pom.xml b/pom.xml
index 3b5f05ea3ce..cdf70fcdb63 100644
--- a/pom.xml
+++ b/pom.xml
@@ -719,6 +719,10 @@
               <junit.jupiter.extensions.autodetection.enabled>true</junit.jupiter.extensions.autodetection.enabled>
               <jetty.testtracker.log>${jetty.testtracker.log}</jetty.testtracker.log>
             </systemPropertyVariables>
+            <!-- The LC_ALL env variable must have some UTF variant otherwise creating and/or reading files with non-ascii names doesn't work -->
+            <environmentVariables>
+              <LC_ALL>en_US.UTF-8</LC_ALL>
+            </environmentVariables>
           </configuration>
           <dependencies>
             <dependency>