diff --git a/sim_console.c b/sim_console.c
index deff8c36..0e588a5f 100644
--- a/sim_console.c
+++ b/sim_console.c
@@ -1623,7 +1623,7 @@ for (i = 0; i < val; i++)
     temptabs[i] = 0;
 do {
     cptr = get_glyph (cptr, gbuf, ';');
-    d = get_uint (gbuf, 10, val, &r);
+    d = (int32)get_uint (gbuf, 10, val, &r);
     if ((r != SCPE_OK) || (d == 0)) {
         free (temptabs);
         return SCPE_ARG;
diff --git a/sim_ether.h b/sim_ether.h
index 309b9cb9..fc14c0fb 100644
--- a/sim_ether.h
+++ b/sim_ether.h
@@ -132,6 +132,9 @@
 */
 #if defined(HAVE_PCAP_NETWORK)
 #define USE_BPF 1
+#if defined (_WIN32) && !defined (BPF_CONST_STRING)
+#define BPF_CONST_STRING 1
+#endif
 #else
 #define DONT_USE_PCAP_FINDALLDEVS 1
 #endif