--- a/callback/Makefile
+++ b/callback/Makefile
@@ -37,7 +37,7 @@ clean:
 # install programs
 #
 install: all
-	$(INSTALL) -s -m 700 -o root callback $(SBINDIR)
+	$(INSTALL) -s -m 755 -o root callback $(SBINDIR)
 	$(INSTALL) -s -m 4711 -o root ct $(BINDIR)
 
 # source modules
