diff --git a/hw/net/rtl8139.c b/hw/net/rtl8139.c
index 5f1a4d3..b4df75b 100644
--- a/hw/net/rtl8139.c
+++ b/hw/net/rtl8139.c
@@ -826,7 +826,6 @@
 
     uint32_t packet_header = 0;
 
-    uint8_t buf1[MIN_BUF_SIZE + VLAN_HLEN];
     static const uint8_t broadcast_macaddr[6] =
         { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 
@@ -938,17 +937,6 @@
         }
     }
 
-    /* if too small buffer, then expand it
-     * Include some tailroom in case a vlan tag is later removed. */
-    if (size < MIN_BUF_SIZE + VLAN_HLEN) {
-        memcpy(buf1, buf, size);
-        memset(buf1 + size, 0, MIN_BUF_SIZE + VLAN_HLEN - size);
-        buf = buf1;
-        if (size < MIN_BUF_SIZE) {
-            size = MIN_BUF_SIZE;
-        }
-    }
-
     if (rtl8139_cp_receiver_enabled(s))
     {
         if (!rtl8139_cp_rx_valid(s)) {