diff --git a/Shorewall-core/lib.cli b/Shorewall-core/lib.cli
index f8f875c5e..0e2de1525 100644
--- a/Shorewall-core/lib.cli
+++ b/Shorewall-core/lib.cli
@@ -3815,7 +3815,7 @@ iprange_command() {
 }
 
 ipdecimal_command() {
-    if [ $# eq 1 ]; then
+    if [ $# -eq 1 ]; then
 	missing_argument
     else
 	[ $# -eq 2 ] || too_many_arguments $3