--- ez-ipupdate-3.0.11b8/ez-ipupdate.c
+++ ez-ipupdate-3.0.11b8/ez-ipupdate.c
@@ -205,6 +205,8 @@
 #  define OS "unknown"
 #endif
 
+#include <time.h>
+
 // the min period for checking the interface
 #define MIN_UPDATE_PERIOD 10
 // the min/max time to wait if we fail to update