diff --git a/Dockerfile b/Dockerfile
index bf6dab2..4d07613 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@
 ARG VERSION_ARG="latest"
 FROM scratch AS build-amd64
 
-COPY --from=qemux/qemu:7.27 / /
+COPY --from=qemux/qemu:7.28 / /
 
 ARG TARGETARCH
 ARG DEBCONF_NOWARNINGS="yes"
diff --git a/src/define.sh b/src/define.sh
index cdfa07a..d8050cd 100644
--- a/src/define.sh
+++ b/src/define.sh
@@ -1915,16 +1915,16 @@ setMachine() {
       USB="no"
       VGA="cirrus"
       DISK_TYPE="auto"
-      ADAPTER="rtl8139"
       MACHINE="pc-i440fx-2.4"
-      BOOT_MODE="windows_legacy" ;;
+      BOOT_MODE="windows_legacy"
+      [ -z "${ADAPTER:-}" ] && ADAPTER="pcnet" ;;
     "win2k"* )
       VGA="cirrus"
       MACHINE="pc"
       USB="pci-ohci"
       DISK_TYPE="auto"
-      ADAPTER="rtl8139"
-      BOOT_MODE="windows_legacy" ;;
+      BOOT_MODE="windows_legacy"
+      [ -z "${ADAPTER:-}" ] && ADAPTER="rtl8139" ;;
     "winxp"* | "win2003"* )
       DISK_TYPE="blk"
       BOOT_MODE="windows_legacy" ;;