Index: src/OFDatagramSocket.h
==================================================================
--- src/OFDatagramSocket.h
+++ src/OFDatagramSocket.h
@@ -105,10 +105,11 @@
     OFReadyForWritingObserving>
 {
 	OFSocketHandle _socket;
 #ifdef OF_AMIGAOS
 	LONG _socketID;
+	int _family;	/* unused, reserved for ABI stability */
 #endif
 	bool _canBlock;
 #ifdef OF_WII
 	bool _canSendToBroadcastAddresses;
 #endif

Index: src/OFSequencedPacketSocket.h
==================================================================
--- src/OFSequencedPacketSocket.h
+++ src/OFSequencedPacketSocket.h
@@ -124,10 +124,14 @@
  */
 @interface OFSequencedPacketSocket: OFObject <OFCopying,
     OFReadyForReadingObserving, OFReadyForWritingObserving>
 {
 	OFSocketHandle _socket;
+#ifdef OF_AMIGAOS
+	LONG _socketID;	/* unused, reserved for ABI stability */
+	int _family;	/* unused, reserved for ABI stability */
+#endif
 	bool _canBlock, _listening;
 	OFSocketAddress _remoteAddress;
 	id _Nullable _delegate;
 	OF_RESERVE_IVARS(OFSequencedPacketSocket, 4)
 }

Index: src/OFStreamSocket.h
==================================================================
--- src/OFStreamSocket.h
+++ src/OFStreamSocket.h
@@ -66,10 +66,11 @@
     OFReadyForWritingObserving>
 {
 	OFSocketHandle _socket;
 #ifdef OF_AMIGAOS
 	LONG _socketID;
+	int _family;	/* unused, reserved for ABI stability */
 #endif
 	bool _atEndOfStream, _listening;
 	OFSocketAddress _remoteAddress;
 	OF_RESERVE_IVARS(OFStreamSocket, 4)
 }