diff --git a/src/piler.c b/src/piler.c
index 2a4d0fe2..28fddade 100644
--- a/src/piler.c
+++ b/src/piler.c
@@ -46,6 +46,7 @@ static pid_t child_make(struct child *ptr);
 int search_slot_by_pid(pid_t pid);
 void kill_children(int sig);
 void clean_exit();
+void fatal(char *s);
 void initialise_configuration();