diff --git a/sys/lib/sysconf b/sys/lib/sysconf
index 77b4c383f..2e1b66e12 100644
--- a/sys/lib/sysconf
+++ b/sys/lib/sysconf
@@ -146,5 +146,6 @@ PANICTRACE_LIBC=0
 # option settings via NETHACKOPTIONS in their environment or via
 # ~/.nethackrc run-time configuration file.
 #OPTIONS=!autopickup,fruit:tomato,symset:DECgraphics
+OPTIONS=perm_invent
 
 #eof