diff --git a/Shorewall-core/lib.cli b/Shorewall-core/lib.cli
index f2a7e90ce..a197de807 100644
--- a/Shorewall-core/lib.cli
+++ b/Shorewall-core/lib.cli
@@ -941,6 +941,7 @@ show_command() {
     local output_filter
     output_filter=cat
     local arptables
+    local macro
 
     show_macro() {
 	foo=`grep 'This macro' $macro | sed 's/This macro //'`