diff --git a/src/hardware/ne2000.cpp b/src/hardware/ne2000.cpp
index 7b4dcec..08f0a88 100644
--- a/src/hardware/ne2000.cpp
+++ b/src/hardware/ne2000.cpp
@@ -28,6 +28,7 @@
 
 #include <cstdio>
 #include <cstring>
+#include <cstdarg>
 
 #include <pcap.h>