diff --git a/internal/cmd/loadbalancer/add_target.go b/internal/cmd/loadbalancer/add_target.go
index 896c4ef0..89f55bea 100644
--- a/internal/cmd/loadbalancer/add_target.go
+++ b/internal/cmd/loadbalancer/add_target.go
@@ -46,6 +46,9 @@ var AddTargetCmd = base.Cmd{
 		labelSelector, _ := cmd.Flags().GetString("label-selector")
 		ipAddr, _ := cmd.Flags().GetString("ip")
 
+		if !util.AnySet(serverIDOrName, labelSelector, ipAddr) {
+			return fmt.Errorf("specify one of --server, --label-selector, or --ip")
+		}
 		if !util.ExactlyOneSet(serverIDOrName, labelSelector, ipAddr) {
 			return fmt.Errorf("--server, --label-selector, and --ip are mutually exclusive")
 		}
diff --git a/internal/cmd/loadbalancer/remove_target.go b/internal/cmd/loadbalancer/remove_target.go
index a83f9069..ae71e38a 100644
--- a/internal/cmd/loadbalancer/remove_target.go
+++ b/internal/cmd/loadbalancer/remove_target.go
@@ -54,6 +54,9 @@ var RemoveTargetCmd = base.Cmd{
 			return fmt.Errorf("Load Balancer not found: %s", idOrName)
 		}
 
+		if !util.AnySet(serverIDOrName, labelSelector, ipAddr) {
+			return fmt.Errorf("specify one of --server, --label-selector, or --ip")
+		}
 		if !util.ExactlyOneSet(serverIDOrName, labelSelector, ipAddr) {
 			return fmt.Errorf("--server, --label-selector, and --ip are mutually exclusive")
 		}
diff --git a/internal/cmd/util/util.go b/internal/cmd/util/util.go
index c59bb398..d01afd2d 100644
--- a/internal/cmd/util/util.go
+++ b/internal/cmd/util/util.go
@@ -90,6 +90,15 @@ func ChainRunE(fns ...func(cmd *cobra.Command, args []string) error) func(cmd *c
 	}
 }
 
+func AnySet(ss ...string) bool {
+	for _, s := range ss {
+		if s != "" {
+			return true
+		}
+	}
+	return false
+}
+
 func ExactlyOneSet(s string, ss ...string) bool {
 	set := s != ""
 	for _, s := range ss {