diff --git a/build.xml b/build.xml
index e10a6fc79..06ca712c7 100644
--- a/build.xml
+++ b/build.xml
@@ -19,8 +19,8 @@
     <copy file="IJ_Props.txt" todir="build" />
     <copy file="images/microscope.gif" tofile="build/microscope.gif" />
     <copy file="images/about.jpg" tofile="build/about.jpg" />
-	<copy file="plugins/MacAdapter.class" tofile="build/ij/plugin/MacAdapter.class" />
-	<copy file="plugins/MacAdapter9.class" tofile="build/ij/plugin/MacAdapter9.class" /> 
+	<!-- <copy file="plugins/MacAdapter.class" tofile="build/ij/plugin/MacAdapter.class" />
+	<copy file="plugins/MacAdapter9.class" tofile="build/ij/plugin/MacAdapter9.class" />  -->
     <copy todir="build/macros"><fileset dir="macros"/></copy>
     <!-- Build ij.jar. -->
     <jar jarfile="ij.jar" basedir="build"
diff --git a/src/main/java/MacAdapter9.java b/src/main/java/MacAdapter9.java
deleted file mode 100644
index d5be1ef43..000000000
--- a/src/main/java/MacAdapter9.java
+++ /dev/null
@@ -1,58 +0,0 @@
-package ij.plugin;
-import ij.*;
-import ij.io.*;
-import java.awt.Desktop;
-import java.awt.desktop.*;
-import java.io.File;
-import java.util.Vector;
-
-/** This Mac-specific plugin is designed to handle the "About ImageJ" 
- * command in the ImageJ menu, to open files dropped on ImageJ.app 
- * and to open double-clicked files with creator code "imgJ". 
- * With Java 9 or newer, we use java.awt.desktop instead of the
- * previous com.apple.eawt.* classes.
- * @author Alan Brooks
-*/
-public class MacAdapter9 implements PlugIn, AboutHandler, OpenFilesHandler, QuitHandler, Runnable {
-   static Vector<String> paths = new Vector<String>();
-
-   public void run(String arg) {
-      Desktop dtop = Desktop.getDesktop();
-      dtop.setOpenFileHandler(this);
-      dtop.setAboutHandler(this);
-      dtop.setQuitHandler(this);
-   }
-
-   @Override
-   public void handleAbout(AboutEvent e) {
-      IJ.doCommand("About ImageJ...");
-   }
-
-   @Override
-   public void openFiles(OpenFilesEvent e) {
-      for (File file: e.getFiles()) {
-         paths.add(file.getPath());
-         Thread thread = new Thread(this, "Open");
-         thread.setPriority(thread.getPriority()-1);
-         thread.start();
-      }
-   }
-
-   @Override
-   public void handleQuitRequestWith(QuitEvent e, QuitResponse response) {
-      new Executer("Quit", null); // works with the CommandListener
-   }
- 
-   // Not adding preference handling
-   // because we don't have the equivalent of app.setEnabledPreferencesMenu(true);
-   // @Override
-   // public void handlePreferences(PreferencesEvent e) {
-   //    IJ.error("The ImageJ preferences are in the Edit>Options menu.");
-   // }
-  
-    public void run() {
-      if (paths.size() > 0) {
-         (new Opener()).openAndAddToRecent(paths.remove(0));
-      }
-    }
-}