diff --git a/include/utmp.h b/include/utmp.h
index b145a11..8ffe3d7 100644
--- a/include/utmp.h
+++ b/include/utmp.h
@@ -33,6 +33,7 @@ struct utmp *pututline(const struct utmp *);
 void         setutent(void);
 
 void updwtmp(const char *, const struct utmp *);
+void logwtmp(const char *, const char *, const char *);
 
 #define _PATH_UTMP "/dev/null"
 #define _PATH_WTMP "/dev/null"
diff --git a/src/stub/utmpx.c b/src/stub/utmpx.c
index c483e4e..1d51d96 100644
--- a/src/stub/utmpx.c
+++ b/src/stub/utmpx.c
@@ -34,6 +34,10 @@ void updwtmpx(const char *f, const struct utmpx *u)
 {
 }
 
+void logwtmp(const char *l, const char *n, const char *h)
+{
+}
+
 weak_alias(endutxent, endutent);
 weak_alias(setutxent, setutent);
 weak_alias(getutxent, getutent);