Index: src/OFDatagramSocket.m
==================================================================
--- src/OFDatagramSocket.m
+++ src/OFDatagramSocket.m
@@ -41,10 +41,14 @@
 #import "OFOutOfRangeException.h"
 #import "OFReadFailedException.h"
 #import "OFSetOptionFailedException.h"
 #import "OFSetOptionFailedException.h"
 #import "OFWriteFailedException.h"
+
+#if defined(OF_AMIGAOS) && !defined(UNIQUE_ID)
+# define UNIQUE_ID -1
+#endif
 
 @implementation OFDatagramSocket
 @synthesize delegate = _delegate;
 
 + (void)initialize

Index: src/OFStreamSocket.m
==================================================================
--- src/OFStreamSocket.m
+++ src/OFStreamSocket.m
@@ -40,10 +40,14 @@
 #import "OFOutOfMemoryException.h"
 #import "OFOutOfRangeException.h"
 #import "OFReadFailedException.h"
 #import "OFSetOptionFailedException.h"
 #import "OFWriteFailedException.h"
+
+#if defined(OF_AMIGAOS) && !defined(UNIQUE_ID)
+# define UNIQUE_ID -1
+#endif
 
 @implementation OFStreamSocket
 @dynamic delegate;
 @synthesize listening = _listening;