diff --git a/PluralKit.Bot/Lists/SortFilterOptions.cs b/PluralKit.Bot/Lists/SortFilterOptions.cs
index de5eed6c..2b5f164f 100644
--- a/PluralKit.Bot/Lists/SortFilterOptions.cs
+++ b/PluralKit.Bot/Lists/SortFilterOptions.cs
@@ -64,7 +64,8 @@ namespace PluralKit.Bot
             {
                 PrivacyFilter.PrivateOnly => PrivacyLevel.Private,
                 PrivacyFilter.PublicOnly => PrivacyLevel.Public,
-                PrivacyFilter.All => null
+                PrivacyFilter.All => null,
+                _ => throw new ArgumentOutOfRangeException($"Unknown privacy filter {PrivacyFilter}")
             }, Filter, SearchInDescription);
 
         private IEnumerable<ListedMember> Sort(IEnumerable<ListedMember> input)
diff --git a/PluralKit.Bot/Proxy/ProxyMatcher.cs b/PluralKit.Bot/Proxy/ProxyMatcher.cs
index 339e7e8c..d4f81081 100644
--- a/PluralKit.Bot/Proxy/ProxyMatcher.cs
+++ b/PluralKit.Bot/Proxy/ProxyMatcher.cs
@@ -9,10 +9,10 @@ namespace PluralKit.Bot
 {
     public class ProxyMatcher
     {
-        public static readonly Duration LatchExpiryTime = Duration.FromHours(6);
+        private static readonly Duration LatchExpiryTime = Duration.FromHours(6);
 
-        private IClock _clock;
-        private ProxyTagParser _parser;
+        private readonly IClock _clock;
+        private readonly ProxyTagParser _parser;
 
         public ProxyMatcher(ProxyTagParser parser, IClock clock)
         {
diff --git a/PluralKit.Bot/Proxy/ProxyService.cs b/PluralKit.Bot/Proxy/ProxyService.cs
index 6e38c8ab..f96297cb 100644
--- a/PluralKit.Bot/Proxy/ProxyService.cs
+++ b/PluralKit.Bot/Proxy/ProxyService.cs
@@ -18,7 +18,7 @@ namespace PluralKit.Bot
 {
     public class ProxyService
     {
-        public static readonly TimeSpan MessageDeletionDelay = TimeSpan.FromMilliseconds(1000);
+        private static readonly TimeSpan MessageDeletionDelay = TimeSpan.FromMilliseconds(1000);
 
         private readonly LogChannelService _logChannel;
         private readonly IDatabase _db;
diff --git a/PluralKit.Bot/Proxy/ProxyTagParser.cs b/PluralKit.Bot/Proxy/ProxyTagParser.cs
index c4f84423..bdef419c 100644
--- a/PluralKit.Bot/Proxy/ProxyTagParser.cs
+++ b/PluralKit.Bot/Proxy/ProxyTagParser.cs
@@ -1,5 +1,4 @@
 #nullable enable
-using System;
 using System.Collections.Generic;
 using System.Linq;
 
@@ -49,20 +48,6 @@ namespace PluralKit.Bot
             return false;
         }
 
-        public bool TryMatchTags(string input, ProxyTag tag, out string inner)
-        {
-            // This just wraps TryMatchTagsInner w/ support for leading mentions
-            var leadingMention = ExtractLeadingMention(ref input);
-            
-            inner = "";
-            if (!TryMatchTagsInner(input, tag, out var innerRaw)) return false;
-            
-            // Add leading mentions back
-            inner = leadingMention == null ? innerRaw : $"{leadingMention} {innerRaw}";
-            return true;
-
-        }
-
         private bool TryMatchTagsInner(string input, ProxyTag tag, out string inner)
         {
             inner = "";
diff --git a/PluralKit.Bot/Utils/HandlerQueue.cs b/PluralKit.Core/Utils/HandlerQueue.cs
similarity index 98%
rename from PluralKit.Bot/Utils/HandlerQueue.cs
rename to PluralKit.Core/Utils/HandlerQueue.cs
index 732194c5..abeee1ae 100644
--- a/PluralKit.Bot/Utils/HandlerQueue.cs
+++ b/PluralKit.Core/Utils/HandlerQueue.cs
@@ -5,7 +5,7 @@ using System.Threading.Tasks;
 
 using NodaTime;
 
-namespace PluralKit.Bot
+namespace PluralKit.Core
 {
     public class HandlerQueue<T>
     {