diff --git a/core/src/main/java/hudson/model/DirectoryBrowserSupport.java b/core/src/main/java/hudson/model/DirectoryBrowserSupport.java
index 72da0c7514c1..242975e2b13b 100644
--- a/core/src/main/java/hudson/model/DirectoryBrowserSupport.java
+++ b/core/src/main/java/hudson/model/DirectoryBrowserSupport.java
@@ -58,6 +58,8 @@
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
 import jenkins.model.Jenkins;
 import jenkins.security.MasterToSlaveCallable;
 import jenkins.security.ResourceDomainConfiguration;
@@ -65,8 +67,6 @@
 import jenkins.util.SystemProperties;
 import jenkins.util.VirtualFile;
 import org.apache.commons.io.IOUtils;
-import org.apache.tools.zip.ZipEntry;
-import org.apache.tools.zip.ZipOutputStream;
 import org.kohsuke.accmod.Restricted;
 import org.kohsuke.accmod.restrictions.NoExternalUse;
 import org.kohsuke.stapler.HttpResponse;
@@ -530,8 +530,8 @@ private static String createBackRef(int times) {
 
     private static void zip(StaplerResponse2 rsp, VirtualFile root, VirtualFile dir, String glob) throws IOException, InterruptedException {
         OutputStream outputStream = rsp.getOutputStream();
-        try (ZipOutputStream zos = new ZipOutputStream(outputStream)) {
-            zos.setEncoding(Charset.defaultCharset().displayName()); // TODO JENKINS-20663 make this overridable via query parameter
+        // TODO JENKINS-20663 make encoding overridable via query parameter
+        try (ZipOutputStream zos = new ZipOutputStream(outputStream, Charset.defaultCharset())) {
             // TODO consider using run(Callable) here
 
             if (glob.isEmpty()) {
diff --git a/core/src/main/java/jenkins/util/VirtualFile.java b/core/src/main/java/jenkins/util/VirtualFile.java
index 6c754a50bbc4..36279a8ec6fa 100644
--- a/core/src/main/java/jenkins/util/VirtualFile.java
+++ b/core/src/main/java/jenkins/util/VirtualFile.java
@@ -60,6 +60,8 @@
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import java.util.stream.Collectors;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
 import jenkins.MasterToSlaveFileCallable;
 import jenkins.model.ArtifactManager;
 import jenkins.security.MasterToSlaveCallable;
@@ -68,8 +70,6 @@
 import org.apache.tools.ant.types.selectors.SelectorUtils;
 import org.apache.tools.ant.types.selectors.TokenizedPath;
 import org.apache.tools.ant.types.selectors.TokenizedPattern;
-import org.apache.tools.zip.ZipEntry;
-import org.apache.tools.zip.ZipOutputStream;
 import org.kohsuke.accmod.Restricted;
 import org.kohsuke.accmod.restrictions.NoExternalUse;
 
@@ -375,8 +375,8 @@ public int zip(OutputStream outputStream, String includes, String excludes, bool
         }
 
         Collection<String> files = list(includes, excludes, useDefaultExcludes, openOptions);
-        try (ZipOutputStream zos = new ZipOutputStream(outputStream)) {
-            zos.setEncoding(Charset.defaultCharset().displayName()); // TODO JENKINS-20663 make this overridable via query parameter
+        // TODO JENKINS-20663 make encoding overridable via query parameter
+        try (ZipOutputStream zos = new ZipOutputStream(outputStream, Charset.defaultCharset())) {
 
             for (String relativePath : files) {
                 VirtualFile virtualFile = this.child(relativePath);