1 files changed, 1 insertions, 0 deletions

diff --git a/charconv.c b/charconv.c
index 4ede5720..5f97509a 100644
--- a/charconv.c
+++ b/charconv.c
@@ -34,6 +34,7 @@
 
 #ifdef _WIN32
 #include <stdio.h>
+#include <errno.h>
 
 #include <pcap/pcap.h>	/* Needed for PCAP_ERRBUF_SIZE */