diff --git a/dlls/ntdll/unix/socket.c b/dlls/ntdll/unix/socket.c
index 38cb80997ff..f65feef763f 100644
--- a/dlls/ntdll/unix/socket.c
+++ b/dlls/ntdll/unix/socket.c
@@ -1675,6 +1675,9 @@ NTSTATUS sock_ioctl( HANDLE handle, HANDLE event, PIO_APC_ROUTINE apc, void *apc
             return ret ? sock_errno_to_status( errno ) : STATUS_SUCCESS;
         }
 
+        case IOCTL_AFD_WINE_SET_IP_ADD_MEMBERSHIP:
+            return do_setsockopt( handle, io, IPPROTO_IP, IP_ADD_MEMBERSHIP, in_buffer, in_size );
+
         default:
         {
             if ((code >> 16) == FILE_DEVICE_NETWORK)
diff --git a/dlls/ws2_32/socket.c b/dlls/ws2_32/socket.c
index 650885a101e..87966545bb8 100644
--- a/dlls/ws2_32/socket.c
+++ b/dlls/ws2_32/socket.c
@@ -3624,6 +3624,9 @@ int WINAPI WS_setsockopt(SOCKET s, int level, int optname,
     case WS_IPPROTO_IP:
         switch(optname)
         {
+        case WS_IP_ADD_MEMBERSHIP:
+            return server_setsockopt( s, IOCTL_AFD_WINE_SET_IP_ADD_MEMBERSHIP, optval, optlen );
+
         case WS_IP_ADD_SOURCE_MEMBERSHIP:
         case WS_IP_DROP_SOURCE_MEMBERSHIP:
         case WS_IP_BLOCK_SOURCE:
@@ -3640,7 +3643,6 @@ int WINAPI WS_setsockopt(SOCKET s, int level, int optname,
             convert_sockopt(&level, &optname);
             break;
         }
-        case WS_IP_ADD_MEMBERSHIP:
         case WS_IP_DROP_MEMBERSHIP:
 #ifdef IP_HDRINCL
         case WS_IP_HDRINCL:
diff --git a/include/wine/afd.h b/include/wine/afd.h
index 44a8b1a5ff9..c672168bc6a 100644
--- a/include/wine/afd.h
+++ b/include/wine/afd.h
@@ -179,6 +179,7 @@ struct afd_get_events_params
 #define IOCTL_AFD_WINE_GET_SO_SNDBUF        CTL_CODE(FILE_DEVICE_NETWORK, 236, METHOD_BUFFERED, FILE_ANY_ACCESS)
 #define IOCTL_AFD_WINE_GET_SO_SNDTIMEO      CTL_CODE(FILE_DEVICE_NETWORK, 237, METHOD_BUFFERED, FILE_ANY_ACCESS)
 #define IOCTL_AFD_WINE_SET_SO_SNDTIMEO      CTL_CODE(FILE_DEVICE_NETWORK, 238, METHOD_BUFFERED, FILE_ANY_ACCESS)
+#define IOCTL_AFD_WINE_SET_IP_ADD_MEMBERSHIP            CTL_CODE(FILE_DEVICE_NETWORK, 239, METHOD_BUFFERED, FILE_ANY_ACCESS)
 
 struct afd_create_params
 {