diff --git a/common/src/main/java/io/netty/util/internal/PlatformDependent.java b/common/src/main/java/io/netty/util/internal/PlatformDependent.java
index e3dd3539ef..1ccaf7ca54 100644
--- a/common/src/main/java/io/netty/util/internal/PlatformDependent.java
+++ b/common/src/main/java/io/netty/util/internal/PlatformDependent.java
@@ -1146,6 +1146,8 @@ public final class PlatformDependent {
                     case 'g': case 'G':
                         maxDirectMemory *= 1024 * 1024 * 1024;
                         break;
+                    default:
+                        break;
                 }
                 break;
             }
diff --git a/transport/src/main/java/io/netty/channel/nio/NioEventLoop.java b/transport/src/main/java/io/netty/channel/nio/NioEventLoop.java
index 9962778e68..0c5ae91b14 100644
--- a/transport/src/main/java/io/netty/channel/nio/NioEventLoop.java
+++ b/transport/src/main/java/io/netty/channel/nio/NioEventLoop.java
@@ -738,6 +738,8 @@ public final class NioEventLoop extends SingleThreadEventLoop {
                     invokeChannelUnregistered(task, k, null);
                 }
                 break;
+            default:
+                 break;
             }
         }
     }