diff --git a/qga/channel-posix.c b/qga/channel-posix.c
index d4fd628907..ca9e4aaaf9 100644
--- a/qga/channel-posix.c
+++ b/qga/channel-posix.c
@@ -4,6 +4,7 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <stdlib.h>
+#include <string.h>
 #include "qemu/osdep.h"
 #include "qemu/sockets.h"
 #include "qga/channel.h"