diff --git a/src/main.cr b/src/main.cr
index ef94dd7..7f34264 100644
--- a/src/main.cr
+++ b/src/main.cr
@@ -31,7 +31,7 @@ OptionParser.parse! do |parser|
 		prefered_network_configuration_program = prog
 	end
 
-	parser.on "-d dhcp-client-program", "--dhcp-client dhcp-client-program", "udhcpc" do |prog|
+	parser.on "-d dhcp-client-program", "--dhcp-client dhcp-client-program", "udhcpc | dhclient" do |prog|
 		prefered_dhcp_client = prog
 	end