diff --git a/.travis.yml b/.travis.yml
index 97a6d93..87707b6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,7 @@ language: erlang
 notifications:
   email: false
 otp_release:
-  - 22.1
+  - 22.0
   - 21.3.8
   - 20.3
   - 19.3
diff --git a/src/statsderl_udp.erl b/src/statsderl_udp.erl
index edf992c..04cbd81 100644
--- a/src/statsderl_udp.erl
+++ b/src/statsderl_udp.erl
@@ -23,10 +23,11 @@
 -ifdef(UDP_HEADER_1).
 
 header(IP, Port) ->
-    [?INT16(Port) , ip4_to_bytes(IP)].
+    [?INT16(Port), ip4_to_bytes(IP)].
 
 -else.
 -ifdef(UDP_HEADER_2).
+
 header(IP, Port) ->
     [?INET_AF_INET, ?INT16(Port) , ip4_to_bytes(IP)].