diff --git a/dlls/wpcap/wpcap.c b/dlls/wpcap/wpcap.c
index 0393ad15113..304cc2b394f 100644
--- a/dlls/wpcap/wpcap.c
+++ b/dlls/wpcap/wpcap.c
@@ -74,6 +74,12 @@ pcap_t* CDECL wine_pcap_open_live(const char *source, int snaplen, int promisc,
     return pcap_open_live(source, snaplen, promisc, to_ms, errbuf);
 }
 
+int CDECL wine_pcap_setbuff(pcap_t * p, int dim)
+{
+    FIXME("(%p %i) stub\n", p, dim);
+    return 0;
+}
+
 int CDECL wine_pcap_stats(pcap_t *p, struct pcap_stat *ps)
 {
     TRACE("(%p %p)\n", p, ps);
diff --git a/dlls/wpcap/wpcap.spec b/dlls/wpcap/wpcap.spec
index 51862762a9e..4c9d5af746e 100644
--- a/dlls/wpcap/wpcap.spec
+++ b/dlls/wpcap/wpcap.spec
@@ -64,7 +64,7 @@
 @ stub pcap_sendqueue_queue
 @ stub pcap_sendqueue_transmit
 @ stub pcap_set_datalink
-@ stub pcap_setbuff
+@ cdecl pcap_setbuff(ptr long) wine_pcap_setbuff
 @ stub pcap_setfilter
 @ stub pcap_setmintocopy
 @ stub pcap_setmode