diff --git a/src/main/java/org/apache/commons/compress/archivers/zip/StreamCompressor.java b/src/main/java/org/apache/commons/compress/archivers/zip/StreamCompressor.java
index f1c810e..657a492 100644
--- a/src/main/java/org/apache/commons/compress/archivers/zip/StreamCompressor.java
+++ b/src/main/java/org/apache/commons/compress/archivers/zip/StreamCompressor.java
@@ -270,6 +270,7 @@
             this.bs = bs;
         }
 
+        @Override
         protected final void writeOut(byte[] data, int offset, int length)
                 throws IOException {
             bs.writeOut(data, offset, length);
@@ -284,6 +285,7 @@
             this.os = os;
         }
 
+        @Override
         protected final void writeOut(byte[] data, int offset, int length)
                 throws IOException {
             os.write(data, offset, length);
@@ -298,6 +300,7 @@
             this.raf = raf;
         }
 
+        @Override
         protected final void writeOut(byte[] data, int offset, int length)
                 throws IOException {
             raf.write(data, offset, length);