diff --git i/src/direvent.h w/src/direvent.h
index 18ab4c8..3c49500 100644
--- i/src/direvent.h
+++ w/src/direvent.h
@@ -313,6 +313,7 @@ int sigv_set_all(void (*handler)(int), int sigc, int *sigv,
 		 struct sigaction *retsa);
 int sigv_set_tab(int sigc, struct sigtab *sigtab, struct sigaction *retsa);
 int sigv_set_action_tab(int sigc, struct sigtab *sigtab, struct sigaction *sa);
+int sigv_restore_tab(int sigc, struct sigtab *sigtab, struct sigaction *sa);
 
 struct grecs_locus;
 int filpatlist_add(filpatlist_t *fptr, char const *arg,