diff --git a/pjlib-util/include/pjlib-util.h b/pjlib-util/include/pjlib-util.h
index 6ef9119..33f8e0d 100644
--- a/pjlib-util/include/pjlib-util.h
+++ b/pjlib-util/include/pjlib-util.h
@@ -20,6 +20,7 @@
 #define __PJLIB_UTIL_H__
 
 #include <pjlib-util/errno.h>
+#include <pjlib-util/getopt.h>
 #include <pjlib-util/md5.h>
 #include <pjlib-util/scanner.h>
 #include <pjlib-util/stun.h>