diff --git a/src/server/slavefuncs.h b/src/server/slavefuncs.h
--- a/src/server/slavefuncs.h
+++ b/src/server/slavefuncs.h
@@ -28,7 +28,8 @@
 
 
 struct msg;
-int sendSignal(struct remoteio *rem, int signal);
+int sendSignal(struct remoteio *rem, char signal);
+int sendExtSignal(struct remoteio *rem, char signal, char *data);
 xmlNodePtr xml_quickxpath(xmlXPathContextPtr xpathctxt, xmlChar *path);
 int software_updatecheck();
 int delete_jobdata(int jobnum, char *datadir);