diff --git a/sys/contrib/dev/rtw88/debug.h b/sys/contrib/dev/rtw88/debug.h
--- a/sys/contrib/dev/rtw88/debug.h
+++ b/sys/contrib/dev/rtw88/debug.h
@@ -27,6 +27,7 @@
 	RTW_DBG_SDIO		= 0x00040000,
 
 #if defined(__FreeBSD__)
+	RTW_DBG_SKB_LEAK	= 0x08000000,
 	RTW_DBG_IO_RW		= 0x10000000,
 #endif
 	RTW_DBG_UNEXP		= 0x80000000,
diff --git a/sys/contrib/dev/rtw88/pci.c b/sys/contrib/dev/rtw88/pci.c
--- a/sys/contrib/dev/rtw88/pci.c
+++ b/sys/contrib/dev/rtw88/pci.c
@@ -979,8 +979,18 @@
 	int ret;
 
 	ret = rtw_pci_tx_write_data(rtwdev, pkt_info, skb, queue);
+#if defined(__linux__)
 	if (ret)
 		return ret;
+#elif defined(__FreeBSD__)
+	if (ret) {
+		rtw_dbg(rtwdev, RTW_DBG_SKB_LEAK, "%s: rtw_pci_tx_write_data "
+		    "returned %d, skb %p (len %u) freed\n",
+		    __func__, ret, skb, skb->len);
+		dev_kfree_skb_any(skb);
+		return ret;
+	}
+#endif
 
 	ring = &rtwpci->tx_rings[queue];
 	spin_lock_bh(&rtwpci->irq_lock);