diff --git a/defines.nft b/defines.nft
new file mode 100644
index 0000000..fba9f41
--- /dev/null
+++ b/defines.nft
@@ -0,0 +1,3 @@
+define SSH_PORT1 = 22
+define SSH_PORT2 = 8022
+
diff --git a/filter.nft b/filter.nft
index 5a52ff4..b31ddb2 100644
--- a/filter.nft
+++ b/filter.nft
@@ -1,8 +1,7 @@
 #!/usr/bin/nft
 flush ruleset
 
-define SSH_PORT1 = 22
-define SSH_PORT2 = 8022
+include "./defines.nft"
 
 table ip filter {
 	set allowed_tcp_ports {