diff --git a/src/main/java/org/fedorahosted/tennera/jgettext/Catalog.java b/src/main/java/org/fedorahosted/tennera/jgettext/Catalog.java
index fec7820..b5762f1 100644
--- a/src/main/java/org/fedorahosted/tennera/jgettext/Catalog.java
+++ b/src/main/java/org/fedorahosted/tennera/jgettext/Catalog.java
@@ -112,6 +112,7 @@ public void processMessages(MessageProcessor processor) {
         }
     }
 
+    @Override
     public Iterator<Message> iterator() {
         return messageMap.values().iterator();
     }
diff --git a/src/main/java/org/fedorahosted/tennera/jgettext/catalog/parse/CatalogLexer.java b/src/main/java/org/fedorahosted/tennera/jgettext/catalog/parse/CatalogLexer.java
index 021b503..efa6a70 100644
--- a/src/main/java/org/fedorahosted/tennera/jgettext/catalog/parse/CatalogLexer.java
+++ b/src/main/java/org/fedorahosted/tennera/jgettext/catalog/parse/CatalogLexer.java
@@ -523,6 +523,7 @@ private MsgctxtCollector(String initial) {
                 collect(initial);
             }
 
+            @Override
             protected void wrapUp(String entry, boolean isPrevious) {
                 if (isPrevious) {
                     addToken(new Token(PREV_MSGCTXT, entry));
diff --git a/src/main/java/org/fedorahosted/tennera/jgettext/util/LocaleUtils.java b/src/main/java/org/fedorahosted/tennera/jgettext/util/LocaleUtils.java
index 44dea40..5984cc1 100644
--- a/src/main/java/org/fedorahosted/tennera/jgettext/util/LocaleUtils.java
+++ b/src/main/java/org/fedorahosted/tennera/jgettext/util/LocaleUtils.java
@@ -30,6 +30,7 @@ public class LocaleUtils {
             new LocaleComparator();
 
     public static class LocaleComparator implements Comparator {
+        @Override
         public int compare(Object o1, Object o2) {
             return render((Locale) o1, '-').compareTo(render((Locale) o2, '-'));
         }
diff --git a/src/main/java/org/fedorahosted/tennera/jgettext/util/NoOpWriter.java b/src/main/java/org/fedorahosted/tennera/jgettext/util/NoOpWriter.java
index 2ce4a77..8c845ab 100644
--- a/src/main/java/org/fedorahosted/tennera/jgettext/util/NoOpWriter.java
+++ b/src/main/java/org/fedorahosted/tennera/jgettext/util/NoOpWriter.java
@@ -24,12 +24,15 @@
  */
 public class NoOpWriter extends Writer {
 
+    @Override
     public void write(char cbuf[], int off, int len) {
     }
 
+    @Override
     public void flush() {
     }
 
+    @Override
     public void close() {
     }
 }
\ No newline at end of file
diff --git a/src/test/java/org/fedorahosted/tennera/jgettext/TestDynamicRoundtrips.java b/src/test/java/org/fedorahosted/tennera/jgettext/TestDynamicRoundtrips.java
index 9b8eebc..5237c0e 100644
--- a/src/test/java/org/fedorahosted/tennera/jgettext/TestDynamicRoundtrips.java
+++ b/src/test/java/org/fedorahosted/tennera/jgettext/TestDynamicRoundtrips.java
@@ -87,6 +87,7 @@ protected void runTest() throws Throwable {
 
     private static class PoAndDirFileFilter implements FileFilter {
         // @Override
+        @Override
         public boolean accept(File pathname) {
             if (pathname.isDirectory()) {
                 return true;