--- ftpd/logwtmp.c
+++ ftpd/logwtmp.c
@@ -43,6 +43,7 @@
 #include <sys/types.h>
 #include <sys/time.h>
 #include <sys/stat.h>
+#include <time.h>
 
 #include <fcntl.h>
 #include <utmp.h>