diff --git a/src/test/java/org/apache/commons/fileupload/SizesTest.java b/src/test/java/org/apache/commons/fileupload/SizesTest.java
index a2a6536..3cd0111 100644
--- a/src/test/java/org/apache/commons/fileupload/SizesTest.java
+++ b/src/test/java/org/apache/commons/fileupload/SizesTest.java
@@ -258,7 +258,7 @@
         try {
             InputStream stream = item.openStream();
             ByteArrayOutputStream baos = new ByteArrayOutputStream();
-            Streams.copy(stream, baos, true);
+            Streams.copy(stream, baos, true); // Streams.copy closes the input file
         } catch (FileUploadIOException e) {
             fail(e.getMessage());
         }
@@ -276,7 +276,7 @@
         try {
             InputStream stream = item.openStream();
             ByteArrayOutputStream baos = new ByteArrayOutputStream();
-            Streams.copy(stream, baos, true);
+            Streams.copy(stream, baos, true); // Streams.copy closes the input file
             fail();
         } catch (FileUploadIOException e) {
             // expected