diff --git a/Headers/gnustep/base/UdpPort.h b/Headers/gnustep/base/UdpPort.h
index d44488b41..b82ff7e03 100644
--- a/Headers/gnustep/base/UdpPort.h
+++ b/Headers/gnustep/base/UdpPort.h
@@ -53,7 +53,9 @@
 
 @end
 
-@interface UdpPacket : Packet
+@interface UdpInPacket : InPacket
+@end
+@interface UdpOutPacket : OutPacket
 @end
 
 #endif /* __UdpPort_h_INCLUDE_GNU */
diff --git a/Source/objects/UdpPort.h b/Source/objects/UdpPort.h
index d44488b41..b82ff7e03 100644
--- a/Source/objects/UdpPort.h
+++ b/Source/objects/UdpPort.h
@@ -53,7 +53,9 @@
 
 @end
 
-@interface UdpPacket : Packet
+@interface UdpInPacket : InPacket
+@end
+@interface UdpOutPacket : OutPacket
 @end
 
 #endif /* __UdpPort_h_INCLUDE_GNU */