diff --git a/src/pandroid/app/src/main/java/com/panda3ds/pandroid/utils/ZipBuilder.java b/src/pandroid/app/src/main/java/com/panda3ds/pandroid/utils/ZipBuilder.java
index 760e32f93..604569621 100644
--- a/src/pandroid/app/src/main/java/com/panda3ds/pandroid/utils/ZipBuilder.java
+++ b/src/pandroid/app/src/main/java/com/panda3ds/pandroid/utils/ZipBuilder.java
@@ -45,7 +45,7 @@ private void append(String path, String parent) throws Exception {
             byte[] buffer = new byte[1024 * 64];
             int len;
             while ((len = input.read(buffer)) != -1) {
-                output.write(buffer, 0, len);
+                zip.write(buffer, 0, len);
             }
             input.close();
             zip.flush();
@@ -58,4 +58,4 @@ public void end() throws Exception {
         zip.close();
         output.close();
     }
-}
\ No newline at end of file
+}