diff --git a/WHATSNEW b/WHATSNEW
index 1bc965607..1581d5368 100644
--- a/WHATSNEW
+++ b/WHATSNEW
@@ -322,8 +322,8 @@ Fixed bugs:
   connetced to, potentially leading to exceptions in commons-net.
   Bugzilla Report 33618.
 
-* <zip>'s defaultexcludes attribute was ignored when an archive was
-  updated.  Bugzilla Report 33412.
+* <zip> would drop files matched by defaultexcludes during updates.
+  Bugzilla Report 33412.
 
 * <zip> couldn't store files with size between 2GB and 4GB (the
   upper limit set by the ZIP format itself).  Bugzilla Report 33310.
diff --git a/src/main/org/apache/tools/ant/taskdefs/Zip.java b/src/main/org/apache/tools/ant/taskdefs/Zip.java
index f96cfa8b6..48039f979 100644
--- a/src/main/org/apache/tools/ant/taskdefs/Zip.java
+++ b/src/main/org/apache/tools/ant/taskdefs/Zip.java
@@ -524,8 +524,7 @@ public class Zip extends MatchingTask {
                     ZipFileSet oldFiles = new ZipFileSet();
                     oldFiles.setProject(getProject());
                     oldFiles.setSrc(renamedFile);
-                    oldFiles.setDefaultexcludes(getImplicitFileSet()
-                                                .getDefaultexcludes());
+                    oldFiles.setDefaultexcludes(false);
 
                     for (int i = 0; i < addedFiles.size(); i++) {
                         PatternSet.NameEntry ne = oldFiles.createExclude();