diff --git a/src/klogd.c b/src/klogd.c
index 897879d..f6e92be 100644
--- a/src/klogd.c
+++ b/src/klogd.c
@@ -257,6 +257,7 @@
 
 /* Includes. */
 #include <errno.h>
+#include <getopt.h>
 #include <signal.h>
 #include <unistd.h>
 #ifdef SYSV
diff --git a/src/syslogd.c b/src/syslogd.c
index 028bab2..4a178be 100644
--- a/src/syslogd.c
+++ b/src/syslogd.c
@@ -521,6 +521,7 @@ static char sccsid[] = "@(#)syslogd.c	5.27 (Berkeley) 10/10/88";
 #define CONT_LINE 1 /* Allow continuation lines */
 
 #include <ctype.h>
+#include <getopt.h>
 #include <setjmp.h>
 #include <stdarg.h>
 #include <stdio.h>