diff --git a/src/server/slavefuncs.h b/src/server/slavefuncs.h
--- a/src/server/slavefuncs.h
+++ b/src/server/slavefuncs.h
@@ -45,4 +45,6 @@ int exec_blender(char *input, char *outp
 void xmlinit();
 void xmlcleanup();
 int distren_mkdir_recurse(char *dirname);
+int job_build_path(char *filename, unsigned int jobnum);
+
 #endif