diff --git a/hw/ide/macio.c b/hw/ide/macio.c
index 2e043ef1ea8ce583c478a70c8787dc791331b9fd..d3a85cba3b3615b4692a86af21baecff2fc5522f 100644
--- a/hw/ide/macio.c
+++ b/hw/ide/macio.c
@@ -187,7 +187,7 @@ static void pmac_ide_transfer_cb(void *opaque, int ret)
         break;
     case IDE_DMA_TRIM:
         s->bus->dma->aiocb = dma_blk_io(blk_get_aio_context(s->blk), &s->sg,
-                                        offset, 0x1, ide_issue_trim, s->blk,
+                                        offset, 0x1, ide_issue_trim, s,
                                         pmac_ide_transfer_cb, io,
                                         DMA_DIRECTION_TO_DEVICE);
         break;