diff --git client/client_shared.h client/client_shared.h
index 18686cd..f0711f8 100644
--- a/client/client_shared.h
+++ b/client/client_shared.h
@@ -18,6 +18,7 @@ Contributors:
 #define CLIENT_CONFIG_H
 
 #include <stdio.h>
+#include <sys/time.h> /* for timeval */
 
 /* pub_client.c modes */
 #define MSGMODE_NONE 0

