diff --git a/builds/appchan-x.user.js b/builds/appchan-x.user.js
index 9d20c0163..e1ae6fe30 100644
--- a/builds/appchan-x.user.js
+++ b/builds/appchan-x.user.js
@@ -13655,7 +13655,7 @@
     },
     markNew: function(post, ipCount) {
       var counter, suffix;
-      suffix = ['st', 'nd', 'rd'][ipCount % 10] || 'th';
+      suffix = (Math.floor(ipCount / 10)) % 10 === 1 ? 'th' : ['st', 'nd', 'rd'][ipCount % 10 - 1] || 'th';
       counter = $.el('span', {
         className: 'ip-counter',
         textContent: "(" + ipCount + ")"
diff --git a/builds/crx/script.js b/builds/crx/script.js
index c87581b20..d8b45181b 100644
--- a/builds/crx/script.js
+++ b/builds/crx/script.js
@@ -13678,7 +13678,7 @@
     },
     markNew: function(post, ipCount) {
       var counter, suffix;
-      suffix = ['st', 'nd', 'rd'][ipCount % 10] || 'th';
+      suffix = (Math.floor(ipCount / 10)) % 10 === 1 ? 'th' : ['st', 'nd', 'rd'][ipCount % 10 - 1] || 'th';
       counter = $.el('span', {
         className: 'ip-counter',
         textContent: "(" + ipCount + ")"
diff --git a/src/Monitoring/MarkNewIPs.coffee b/src/Monitoring/MarkNewIPs.coffee
index 81c6ed4a9..263d7e53a 100644
--- a/src/Monitoring/MarkNewIPs.coffee
+++ b/src/Monitoring/MarkNewIPs.coffee
@@ -32,7 +32,10 @@ MarkNewIPs =
     MarkNewIPs.postIDs = postIDs
 
   markNew: (post, ipCount) ->
-    suffix = ['st', 'nd', 'rd'][ipCount % 10] or 'th' # fuck switches
+    suffix = if (ipCount // 10) % 10 is 1
+      'th'
+    else
+      ['st', 'nd', 'rd'][ipCount % 10 - 1] or 'th' # fuck switches
     counter = $.el 'span',
       className: 'ip-counter'
       textContent: "(#{ipCount})"