diff --git a/mesh/net.h b/mesh/net.h
index 150240f..a3dec2b 100644
--- a/mesh/net.h
+++ b/mesh/net.h
@@ -21,6 +21,8 @@
 #define __packed __attribute__((packed))
 #endif
 
+#include <sys/time.h> /* for timeval */
+
 struct mesh_io;
 struct mesh_node;