diff --git a/optimize/opt_config b/optimize/opt_config
index a74bbe4..7c7711a 100644
--- a/optimize/opt_config
+++ b/optimize/opt_config
@@ -16,8 +16,8 @@ MAKEFLAGS="-j3"
 #    This list may be different for you.
 #    If your MAKEFLAGS don't contains a -jX option, you can set
 #    a empty list here.
-BLACK_LIST="attr autoconf dejagnu gettext groff man-db vim"
-#    Rationale for attr: the tests do not pass with -jX
+BLACK_LIST="attr autoconf coreutils dejagnu gettext gperf groff man-db vim"
+#    Rationale for attr, coreutils, gperf: the tests do not pass with -jX
 
 #--- Default optimization mode
 #    This mode is overridden by definitions in opt_override;