diff --git a/Shorewall-core/lib.cli b/Shorewall-core/lib.cli
index 28073926d..6db14df5a 100644
--- a/Shorewall-core/lib.cli
+++ b/Shorewall-core/lib.cli
@@ -3550,7 +3550,7 @@ usage() # $1 = exit status
     echo "   [ show | list | ls ] [ -b ] [ -x ] [ -t {filter|mangle|nat} ] [ {chain [<chain> [ <chain> ... ]"
     echo "   [ show | list | ls ] [ -f ] capabilities"
     echo "   [ show | list | ls ] arptables"
-    echo "   [ show | list | ls ] {bl|blacklists}"
+    echo "   [ show | list | ls ] [ -i ] {bl|blacklists}"
     echo "   [ show | list | ls ] classifiers"
     echo "   [ show | list | ls ] config"
     echo "   [ show | list | ls ] connections"